diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5fd1a612..0732129d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Fixed the broken production version due to a missing package (#123).
 - Corrected the counting of the total number of items in the result list (#120).
+- Avoided extending query objects in the configuration (#126).
 
 ## [1.2.0] - 2024-05-07
 
diff --git a/src/App.jsx b/src/App.jsx
index 384d1f48..0f2540be 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -64,9 +64,7 @@ function App() {
         authProvider={authenticationProvider}
         loginPage={SolidLoginForm}
         requireAuth={false}
-        dashboard={() => {
-          return Dashboard({ title: config.title, text: config.introductionText })
-        }}
+        dashboard={Dashboard}
       >
         {config.queries.map((query) => {
           return (
diff --git a/src/components/ActionBar/ActionBar.jsx b/src/components/ActionBar/ActionBar.jsx
index a37d803f..b27613e8 100644
--- a/src/components/ActionBar/ActionBar.jsx
+++ b/src/components/ActionBar/ActionBar.jsx
@@ -20,7 +20,6 @@ import SourceFetchStatusIcon from "./SourceFetchStatusIcon/SourceFetchStatusIcon
 import SourceVerificationIcon from "./SourceVerificationIcon/SourceVerificationIcon.jsx";
 
 import configManager from "../../configManager/configManager.js";
-const config = configManager.getConfig();
 
 /**
  *
@@ -31,10 +30,6 @@ function ActionBar() {
   const [time, setTime] = useState(0);
   const [sourceInfoOpen, setSourceInfoOpen] = useState(false);
 
-  const context = config.queries.filter((query) => query.id === resource)[0]
-    .comunicaContext;
-
-  const sources = context.sources;
   useEffect(() => {
     if (isLoading) {
       setTime(0);
@@ -49,6 +44,10 @@ function ActionBar() {
     return () => clearInterval(intervalId);
   }, [time, isLoading]);
 
+  const config = configManager.getConfig();
+  const query = configManager.getQueryWorkingCopyById(resource);
+  const context = query.comunicaContext;
+  const sources = context.sources;
   const resultCount = total <= perPage ? total : perPage;
 
   return (
diff --git a/src/components/Dashboard/Dashboard.jsx b/src/components/Dashboard/Dashboard.jsx
index 1508a031..d470216a 100644
--- a/src/components/Dashboard/Dashboard.jsx
+++ b/src/components/Dashboard/Dashboard.jsx
@@ -1,31 +1,25 @@
 import Card from '@mui/material/Card';
 import CardContent from '@mui/material/CardContent';
 import {Title} from 'react-admin';
-import PropTypes from 'prop-types';
 import './Dashboard.css';
 
+import configManager from '../../configManager/configManager';
+
 /**
  * This function returns a function that creates a dashboard with an introduction for <Admin>.
- * @param {object} props - This has the properties `title` (text for the app bar) and `text` (the introduction text).
  * @returns {function(): *} - A function that creates a dashboard with an introduction for <Admin>.
  */
-function Dashboard(props) {
-  let {title, text} = props;
-
-  title = title || 'You change this title via the config file.';
-  text = text || 'You change this text via the config file.';
+function Dashboard() {
+  const config = configManager.getConfig();
+  const title = config.title || 'You change this title via the config file.';
+  const introductionText = config.introductionText || 'You change this introduction text via the config file.';
 
   return (
     <Card>
       <Title title={title}/>
-      <CardContent>{text}</CardContent>
+      <CardContent>{introductionText}</CardContent>
     </Card>
   );
 }
 
-Dashboard.propTypes = {
-  title: PropTypes.string,
-  text: PropTypes.string
-};
-
 export default Dashboard;
diff --git a/src/components/InteractionLayout/NavigationBar/NavigationBar.jsx b/src/components/InteractionLayout/NavigationBar/NavigationBar.jsx
index 70e14b75..95423bed 100644
--- a/src/components/InteractionLayout/NavigationBar/NavigationBar.jsx
+++ b/src/components/InteractionLayout/NavigationBar/NavigationBar.jsx
@@ -8,7 +8,6 @@ import { IconButton } from '@mui/material';
 import { Tooltip } from '@mui/material';
 
 import configManager from "../../../configManager/configManager";
-const config = configManager.getConfig();
 
 function InvalidateButton() {
   const refresh = useRefresh();
@@ -31,6 +30,7 @@ function InvalidateButton() {
  * @returns {Component} custom AppBar as defined by react-admin
  */
 function NavigationBar(props) {
+  const config = configManager.getConfig();
   return (
     <AppBar {...props} userMenu={<AuthenticationMenu />}>
       <img
diff --git a/src/components/InteractionLayout/SelectionMenu/SelectionMenu.jsx b/src/components/InteractionLayout/SelectionMenu/SelectionMenu.jsx
index 6ff47e03..e75e31ae 100644
--- a/src/components/InteractionLayout/SelectionMenu/SelectionMenu.jsx
+++ b/src/components/InteractionLayout/SelectionMenu/SelectionMenu.jsx
@@ -14,16 +14,15 @@ import IconProvider from "../../../IconProvider/IconProvider";
 import ListAltIcon from '@mui/icons-material/ListAlt';
 
 import configManager from '../../../configManager/configManager';
-const config = configManager.getConfig();
 
 /**
  * A custom menu as defined in React Admin for selecting the query the user whishes to execute.
  * @returns {Component} the selection menu component
  */
 function SelectionMenu() {
-
-  const resources = useResourceDefinitions();
+  const config = configManager.getConfig();
   const queryGroups = config.queryGroups || [];
+  const resources = useResourceDefinitions();
 
   // adding a list to the group that will contain all the queries for said group
   queryGroups.forEach(group => group.queries = [])
diff --git a/src/components/ListResultTable/ListResultTable.jsx b/src/components/ListResultTable/ListResultTable.jsx
index 1fc5e0e1..8b20f056 100644
--- a/src/components/ListResultTable/ListResultTable.jsx
+++ b/src/components/ListResultTable/ListResultTable.jsx
@@ -3,6 +3,8 @@ import PropTypes from "prop-types";
 import {Component} from "react";
 import QueryResultList from "./QueryResultList/QueryResultList";
 
+import configManager from "../../configManager/configManager";
+
 /**
  * @param {object} props - the props passed down to the component
  * @returns {Component} custom List as defined by react-admin which either shows a loading indicator or the query results
@@ -18,8 +20,6 @@ function ListResultTable(props) {
     resource,
     sort,
     variables,
-    changeVariables,
-    submitted,
     ...rest
   } = props;
 
@@ -31,6 +31,8 @@ function ListResultTable(props) {
     }
   });
 
+  const query = configManager.getQueryWorkingCopyById(resource);
+
   return (
     <ListBase
       debounce={debounce}
@@ -45,7 +47,7 @@ function ListResultTable(props) {
       sort={sort}
     >
       {isLoading && <Loading loadingSecondary={"The page is loading. Just a moment please."} />}
-      {!isLoading && <QueryResultList {...rest} changeVariables={changeVariables} submitted={submitted} />}
+      {!isLoading && <QueryResultList resource={resource} { ...rest } />}
     </ListBase>
   );
 }
@@ -59,9 +61,9 @@ ListResultTable.propTypes = {
   filterDefaultValues: PropTypes.object,
   perPage: PropTypes.number,
   queryOptions: PropTypes.object,
-  resource: PropTypes.string,
+  resource: PropTypes.string.isRequired,
   sort: PropTypes.object,
-  variables: PropTypes.object,
+  variables: PropTypes.object.isRequired
 };
 
 export default ListResultTable;
diff --git a/src/components/ListResultTable/QueryResultList/QueryResultList.jsx b/src/components/ListResultTable/QueryResultList/QueryResultList.jsx
index f1d60646..7f9c566f 100644
--- a/src/components/ListResultTable/QueryResultList/QueryResultList.jsx
+++ b/src/components/ListResultTable/QueryResultList/QueryResultList.jsx
@@ -7,18 +7,18 @@ import TableHeader from "./TableHeader/TableHeader";
 import Button from '@mui/material/Button';
 import SearchOffIcon from '@mui/icons-material/SearchOff';
 import { SvgIcon, Box, Typography } from "@mui/material";
+import PropTypes from "prop-types";
 
 import configManager from "../../../configManager/configManager";
-const config = configManager.getConfig();
 
 /**
  * @param {object} props - the props passed down to the component
  * @returns {Component} custom ListViewer as defined by react-admin containing the results of the query with each variable its generic field. 
  */
 function QueryResultList(props) {
-  const QueryTitle = useResourceDefinition().options.label;
+  const queryTitle = useResourceDefinition().options.label;
   const { data } = useListContext(props);
-  const {changeVariables, submitted} = props;
+  const { resource, changeVariables, submitted} = props;
   const [values, setValues] = useState(undefined);
   useEffect(() => {
     if (data && data.length > 0) {
@@ -28,15 +28,18 @@ function QueryResultList(props) {
     }
   }, [data]);
 
+  const config = configManager.getConfig();
+  const query = configManager.getQueryWorkingCopyById(resource);
+
   return (
     <div style={{ paddingLeft: '20px' , paddingRight: '10px' }}>
       <Title title={config.title} />
       
       {submitted && <Aside changeVariables={changeVariables}/> /*  Adding button to make a new query - top left corner */ } 
-      <Typography fontSize={"2rem"} mt={2} > {QueryTitle} </Typography>
+      <Typography fontSize={"2rem"} mt={2} > {queryTitle} </Typography>
       {values ?(
-          <ListView title=" " actions={<ActionBar />} {...props} >
-            <Datagrid header={<TableHeader config={config}/>} bulkActionButtons={false}>
+        <ListView title=" " actions={<ActionBar />} {...props} >
+            <Datagrid header={<TableHeader query={query}/>} bulkActionButtons={false}>
               {Object.keys(values).map((key) => {
                 return (
                   <GenericField
@@ -49,12 +52,18 @@ function QueryResultList(props) {
             </Datagrid>
           </ListView>
         ): 
-          <NoValuesDiplay/>
+          <NoValuesDisplay/>
       }
     </div>
   );
 }
 
+QueryResultList.propTypes = {
+  resource: PropTypes.string.isRequired,
+  changeVariables: PropTypes.func.isRequired,
+  submitted: PropTypes.bool.isRequired
+};
+
 /**
  *
  * @param {Array<Term>} data - a list of data objects
@@ -81,7 +90,7 @@ const Aside = (props) => {
     </div>
 )}
 
-const NoValuesDiplay = () => {
+const NoValuesDisplay = () => {
   return(
     <div>
       <Box display="flex" alignItems="center" sx={{m:3}}>
diff --git a/src/components/ListResultTable/QueryResultList/TableHeader/TableHeader.jsx b/src/components/ListResultTable/QueryResultList/TableHeader/TableHeader.jsx
index 05e0a138..aff92d7b 100644
--- a/src/components/ListResultTable/QueryResultList/TableHeader/TableHeader.jsx
+++ b/src/components/ListResultTable/QueryResultList/TableHeader/TableHeader.jsx
@@ -8,18 +8,16 @@ import LinkIcon from "@mui/icons-material/Link";
 import PropTypes from "prop-types";
 import { Component } from "react";
 
+import configManager from "../../../../configManager/configManager";
+
 /**
  * 
  * @param {object} props - the props passed down to the component
  * @param {Array<Component>} props.children - the children of the component 
- * @param {object} props.config - the config object of the application
  * @returns {Component} the header of the table containing the column names, the sort icons and ontology links
  */
-function TableHeader({ children, config }) {
+function TableHeader({ children }) {
   const { sort, setSort, resource } = useListContext();
-  const { variableOntology } = config.queries.filter(
-    (query) => query.id === resource
-  )[0];
   
   /**
    * Handles the click on a header and sets the sort state accordingly
@@ -37,6 +35,9 @@ function TableHeader({ children, config }) {
     setSort(newSort);
   }
 
+  const query = configManager.getQueryWorkingCopyById(resource);
+  const variableOntology = query.variableOntology;
+
   return (
     <TableHead>
       <TableRow>
@@ -90,8 +91,6 @@ function TableHeader({ children, config }) {
 }
 
 TableHeader.propTypes = {
-  children: PropTypes.node,
-  config: PropTypes.object.isRequired,
-
+  children: PropTypes.node
 }
 export default TableHeader;
diff --git a/src/components/ListResultTable/TemplatedListResultTable.jsx b/src/components/ListResultTable/TemplatedListResultTable.jsx
index f621564d..171b8303 100644
--- a/src/components/ListResultTable/TemplatedListResultTable.jsx
+++ b/src/components/ListResultTable/TemplatedListResultTable.jsx
@@ -6,7 +6,6 @@ import TemplatedQueryForm from "./TemplatedQueryForm.jsx";
 import ListResultTable from "./ListResultTable.jsx";
 
 import configManager from '../../configManager/configManager.js';
-const config = configManager.getConfig();
 
 /**
  * A wrapper component around ListResultTable, to support templated queries
@@ -22,15 +21,10 @@ const TemplatedListResultTable = (props) => {
   const [submitted, setSubmitted] = useState(false);
   const [searchPar, setSearchPar] = useState({});
 
-  const query = config.queries.filter(
-    (query) => query.id === resource
-  )[0];
-
+  const query = configManager.getQueryWorkingCopyById(resource);
   const isTemplatedQuery = query.variables !== undefined;
   let tableEnabled = !isTemplatedQuery;
   
-  
-
   if (isTemplatedQuery) {
     // Update variables from query parameters
     const queryParams = new URLSearchParams(location.search);
@@ -83,7 +77,7 @@ const TemplatedListResultTable = (props) => {
           searchPar={searchPar} 
         />
       }
-      {tableEnabled && <ListResultTable {...props} variables={variables} changeVariables={changeVariables} submitted={submitted}/>}
+      {tableEnabled && <ListResultTable {...props} resource={resource} variables={variables} changeVariables={changeVariables} submitted={submitted}/>}
     </>
   )
 }
diff --git a/src/components/LoginPage/LoginPage.jsx b/src/components/LoginPage/LoginPage.jsx
index 58e3fbaf..66026f4f 100644
--- a/src/components/LoginPage/LoginPage.jsx
+++ b/src/components/LoginPage/LoginPage.jsx
@@ -1,13 +1,13 @@
 import "./LoginPage.css";
 import { useLogin, useNotify } from "react-admin";
 import { Component, useState } from "react";
+
 import configManager from "../../configManager/configManager";
 
 /**
  * @returns {Component} a login form for logging into your Identity Provider.
  */
 function SolidLoginForm() {
-  const config = configManager.getConfig();
   const login = useLogin();
   const notify = useNotify();
   const [isIdp, setIsIdp] = useState(true);
@@ -25,6 +25,8 @@ function SolidLoginForm() {
     }
   }
 
+  const config = configManager.getConfig();
+
   return (
     <form onSubmit={handleLogin} className="login-form">
       <div className="login-form-type-selection-box">
diff --git a/src/configManager/configManager.js b/src/configManager/configManager.js
index 98c622a3..ae3e29f0 100644
--- a/src/configManager/configManager.js
+++ b/src/configManager/configManager.js
@@ -2,7 +2,10 @@ import configFile from "../config.json";
 import { EventEmitter } from 'events';
 
 /**
- * A class maintaining a configuration object, initially read from the configuration file
+ * A class maintaining a configuration object, initially read from the configuration file.
+ * In addition, working copies of query objects are maintained as well.
+ * These working copies are meant for usage by clients that may extend those query objects,
+ * but shouldn't change the configuration object.
  */
 class ConfigManager extends EventEmitter {
   constructor() {
@@ -16,6 +19,8 @@ class ConfigManager extends EventEmitter {
     if (this.config.queryFolder.substring(this.config.queryFolder.length - 1) !== "/") {
       this.config.queryFolder = `${this.config.queryFolder}/`;
     }
+
+    this.queryWorkingCopies = {};
   }
 
   /**
@@ -34,6 +39,7 @@ class ConfigManager extends EventEmitter {
    */
   setConfig(newConfig) {
     this.config = { ...newConfig };
+    this.queryWorkingCopies = {};
     this.emit('configChanged', this.config);
   }
 
@@ -44,6 +50,7 @@ class ConfigManager extends EventEmitter {
    */
   changeConfig(changes) {
     this.config = { ...this.config, ...changes };
+    this.queryWorkingCopies = {};
     this.emit('configChanged', this.config);
   }
 
@@ -56,6 +63,43 @@ class ConfigManager extends EventEmitter {
     this.config.queries = [...this.config.queries, newQuery];
     this.emit('configChanged', this.config);
   }
+
+  /**
+  * Gets the query with the given id in the config.queries array in the configuration
+  * @param {string} id - id property a query
+  * @returns {object} the query
+  */
+  getQueryById(id) {
+    return this.config.queries.find((query) => query.id === id);
+  }
+
+  /**
+  * Gets a working copy of the query with the given id (make a working copy first if needed)
+  * @param {string} id - id property a query
+  * @returns {object} the query
+  */
+  getQueryWorkingCopyById(id) {
+    let workingCopy = this.queryWorkingCopies[id];
+    if (!workingCopy) {
+      workingCopy = JSON.parse(JSON.stringify(this.getQueryById(id)));
+      this.queryWorkingCopies[id] = workingCopy;
+    }
+    return workingCopy;
+  }
+
+  /**
+   * Gets the query text from a query
+   * @param {object} query - the input query
+   * @returns {string} the query text
+   */
+  async getQueryText(query) {
+
+    if (query.queryLocation) {
+      const fetchResult = await fetch(`${this.config.queryFolder}${query.queryLocation}`);
+      return await fetchResult.text();
+    }
+    return query.queryString;
+  }
 }
 
 const configManager = new ConfigManager();
diff --git a/src/dataProvider/SparqlDataProvider.js b/src/dataProvider/SparqlDataProvider.js
index 2a59f951..3892f786 100644
--- a/src/dataProvider/SparqlDataProvider.js
+++ b/src/dataProvider/SparqlDataProvider.js
@@ -35,7 +35,10 @@ configManager.on('configChanged', onConfigChanged);
 
 export default {
   getList: async function getList(resource, { pagination, sort, filter, meta }) {
-    const query = findQueryWithId(resource);
+    // make a working copy of the query object found in the configuration, to prevent changing the configuration
+    // this copy is extended here
+    // rendering should occur based on this working copy
+    const query = configManager.getQueryWorkingCopyById(resource);
     const limit = pagination.perPage;
     const offset = (pagination.page - 1) * pagination.perPage;
     query.sort = sort;
@@ -98,30 +101,20 @@ export default {
 };
 
 /**
- * Finds a query with the given id in config.queries
- * @param {number} id - identifier of a query
- * @returns {object} the query element from the configuration
+ * Fetches the query file and builds the final query text.
+ * @param {object} query - the query object working copy
+ * @returns {string} the built query text
  */
-function findQueryWithId(id) {
-  return config.queries.find((query) => query.id === id);
-}
-
-/**
- * Fetches the query file from the given query and returns its text.
- * @param {object} query - the query element from the configuration
- * @returns {string} the text from the file location provided by the query relative to query location defined in the config file, modified for our needs.
- */
-async function fetchQuery(query) {
+async function buildQueryText(query) {
   try {
-    const result = await fetch(`${config.queryFolder}${query.queryLocation}`);
-    const parser = new Parser();
-    let rawText = await result.text();
+    let rawText = await configManager.getQueryText(query);
 
     if (query.variableValues) {
       rawText = replaceVariables(rawText, query.variableValues);
     }
 
     query.rawText = rawText;
+    const parser = new Parser();
     const parsedQuery = parser.parse(rawText);
     if (!query.variableOntology) {
       query.variableOntology = findPredicates(parsedQuery);
@@ -182,13 +175,13 @@ function findPredicates(query) {
 }
 
 /**
- * A function that executes a given query and processes every result.
- * @param {object} query - the query element from the configuration
+ * Executes the query in scope and processes every result.
+ * @param {object} query - the query object working copy
  * @returns {Array<Term>} the results of the query
  */
 async function executeQuery(query) {
   try {
-    query.queryText = await fetchQuery(query);
+    query.queryText = await buildQueryText(query);
     return handleQueryExecution(
       await myEngine.query(query.queryText, {
         ...generateContext(query.comunicaContext),