diff --git a/src/botPage/bot/Interpreter.js b/src/botPage/bot/Interpreter.js
index 57854d4428..1f0959e5a1 100644
--- a/src/botPage/bot/Interpreter.js
+++ b/src/botPage/bot/Interpreter.js
@@ -149,8 +149,10 @@ export default class Interpreter {
     }
     terminateSession() {
         this.$scope.api.disconnect();
-        globalObserver.emit('bot.stop');
         this.stopped = true;
+
+        globalObserver.emit('bot.stop');
+        globalObserver.setState({ isRunning: false });
     }
     stop() {
         if (this.bot.tradeEngine.isSold === false && !this.isErrorTriggered) {
diff --git a/src/botPage/bot/TradeEngine/index.js b/src/botPage/bot/TradeEngine/index.js
index aaec4f3c65..8ad3f62180 100644
--- a/src/botPage/bot/TradeEngine/index.js
+++ b/src/botPage/bot/TradeEngine/index.js
@@ -92,6 +92,7 @@ export default class TradeEngine extends Balance(Purchase(Sell(OpenContract(Prop
         }
 
         globalObserver.emit('bot.running');
+        globalObserver.setState({ isRunning: true });
 
         this.tradeOptions = expectTradeOptions(tradeOptions);
 
diff --git a/src/botPage/view/View.js b/src/botPage/view/View.js
index 690a9552ae..3000071b5f 100644
--- a/src/botPage/view/View.js
+++ b/src/botPage/view/View.js
@@ -511,11 +511,19 @@ export default class View {
         });
 
         const startBot = limitations => {
-            const $runButtons = $('#runButton, #summaryRunButton');
-            const $stopButtons = $('#stopButton, #summaryStopButton');
-            $stopButtons.show();
-            $runButtons.hide();
-            $runButtons.prop('disabled', true);
+            const elRunButtons = document.querySelectorAll('#runButton, #summaryRunButton');
+            const elStopButtons = document.querySelectorAll('#stopButton, #summaryStopButton');
+
+            elRunButtons.forEach(el => {
+                const elRunButton = el;
+                elRunButton.style.display = 'none';
+                elRunButton.setAttributeNode(document.createAttribute('disabled'));
+            });
+            elStopButtons.forEach(el => {
+                const elStopButton = el;
+                elStopButton.style.display = 'inline-block';
+            });
+
             globalObserver.emit('summary.disable_clear');
             showSummary();
             this.blockly.run(limitations);
@@ -627,6 +635,9 @@ export default class View {
         this.blockly.stop();
     }
     addEventHandlers() {
+        const getRunButtonElements = () => document.querySelectorAll('#runButton, #summaryRunButton');
+        const getStopButtonElements = () => document.querySelectorAll('#stopButton, #summaryStopButton');
+
         window.addEventListener('storage', e => {
             window.onbeforeunload = null;
             if (e.key === 'activeToken' && !e.newValue) window.location.reload();
@@ -634,7 +645,11 @@ export default class View {
         });
 
         globalObserver.register('Error', error => {
-            $('#runButton, #summaryRunButton').prop('disabled', false);
+            getRunButtonElements().forEach(el => {
+                const elRunButton = el;
+                elRunButton.removeAttribute('disabled');
+            });
+
             if (error.error && error.error.error.code === 'InvalidToken') {
                 removeAllTokens();
                 updateTokenList();
@@ -642,16 +657,32 @@ export default class View {
             }
         });
 
+        globalObserver.register('bot.running', () => {
+            getRunButtonElements().forEach(el => {
+                const elRunButton = el;
+                elRunButton.style.display = 'none';
+                elRunButton.setAttributeNode(document.createAttribute('disabled'));
+            });
+            getStopButtonElements().forEach(el => {
+                const elStopButton = el;
+                elStopButton.style.display = 'inline-block';
+                elStopButton.removeAttribute('disabled');
+            });
+        });
+
         globalObserver.register('bot.stop', () => {
-            const $runButtons = $('#runButton, #summaryRunButton');
-            const $stopButtons = $('#stopButton, #summaryStopButton');
-            if ($runButtons.is(':visible') || $stopButtons.is(':visible')) {
-                $runButtons.show();
-                $stopButtons.hide();
-
-                $stopButtons.prop('disabled', false);
-                $runButtons.prop('disabled', false);
-            }
+            // Enable run button, this event is emitted after the interpreter
+            // killed the API connection.
+            getStopButtonElements().forEach(el => {
+                const elStopButton = el;
+                elStopButton.style.display = null;
+                elStopButton.removeAttribute('disabled');
+            });
+            getRunButtonElements().forEach(el => {
+                const elRunButton = el;
+                elRunButton.style.display = null;
+                elRunButton.removeAttribute('disabled');
+            });
         });
 
         globalObserver.register('bot.info', info => {
diff --git a/src/botPage/view/blockly/blocks/shared.js b/src/botPage/view/blockly/blocks/shared.js
index 80406ad6e2..7e5ed841fe 100644
--- a/src/botPage/view/blockly/blocks/shared.js
+++ b/src/botPage/view/blockly/blocks/shared.js
@@ -410,6 +410,21 @@ export const getPredictionForContracts = (contracts, selectedContractType) => {
     return predictionRange;
 };
 
-export const disableRunButton = isDisabled => {
-    $('#runButton, #summaryRunButton').attr('disabled', isDisabled);
+export const disableRunButton = shouldDisable => {
+    const elRunButtons = document.querySelectorAll('#runButton, #summaryRunButton');
+    const isRunning = globalObserver.getState('isRunning');
+
+    elRunButtons.forEach(elRunButton => {
+        if (isRunning) {
+            if (shouldDisable) {
+                elRunButton.setAttributeNode(document.createAttribute('disabled'));
+            } else {
+                // Do not enable. The bot is running.
+            }
+        } else if (shouldDisable) {
+            elRunButton.setAttributeNode(document.createAttribute('disabled'));
+        } else {
+            elRunButton.removeAttribute('disabled');
+        }
+    });
 };
diff --git a/src/botPage/view/blockly/index.js b/src/botPage/view/blockly/index.js
index f5d9c60fd4..cf92dd5e2c 100644
--- a/src/botPage/view/blockly/index.js
+++ b/src/botPage/view/blockly/index.js
@@ -440,7 +440,17 @@ while(true) {
     }
     stop(stopBeforeStart) {
         if (!stopBeforeStart) {
-            $('#stopButton, #summaryStopButton').prop('disabled', true);
+            const elRunButtons = document.querySelectorAll('#runButton, #summaryRunButton');
+            const elStopButtons = document.querySelectorAll('#stopButton, #summaryStopButton');
+
+            elRunButtons.forEach(el => {
+                const elRunButton = el;
+                elRunButton.style.display = 'initial';
+            });
+            elStopButtons.forEach(el => {
+                const elStopButton = el;
+                elStopButton.style.display = null;
+            });
         }
         if (this.interpreter) {
             this.interpreter.stop();
diff --git a/src/common/utils/observer.js b/src/common/utils/observer.js
index 9fded6642a..d0f06d51f6 100644
--- a/src/common/utils/observer.js
+++ b/src/common/utils/observer.js
@@ -3,6 +3,7 @@ import { Map, List } from 'immutable';
 export default class Observer {
     constructor() {
         this.eam = new Map(); // event action map
+        this.state = {};
     }
     register(event, _action, once, unregisterIfError, unregisterAllBefore) {
         if (unregisterAllBefore) {
@@ -53,6 +54,12 @@ export default class Observer {
             this.eam.get(event).forEach(action => action.action(data));
         }
     }
+    setState(state = {}) {
+        this.state = Object.assign({}, this.state, state);
+    }
+    getState(key) {
+        return this.state[key];
+    }
 }
 
 export const observer = new Observer();
diff --git a/static/css/bot.scss b/static/css/bot.scss
index a4a2063f26..76111ace27 100644
--- a/static/css/bot.scss
+++ b/static/css/bot.scss
@@ -169,7 +169,7 @@ body {
     background: black;
 }
 
-#stopButton {
+#stopButton, #summaryStopButton {
     display: none;
 }