diff --git a/extensions/ql-vscode/src/databases/db-item-expansion.ts b/extensions/ql-vscode/src/databases/db-item-expansion.ts
index e8375923930..39b3960e2b0 100644
--- a/extensions/ql-vscode/src/databases/db-item-expansion.ts
+++ b/extensions/ql-vscode/src/databases/db-item-expansion.ts
@@ -31,7 +31,7 @@ export interface RemoteUserDefinedListExpandedDbItem {
   listName: string;
 }
 
-export function updateItemInExpandedState(
+export function updateExpandedItem(
   currentExpandedItems: ExpandedDbItem[],
   dbItem: DbItem,
   itemExpanded: boolean,
@@ -50,7 +50,7 @@ export function updateItemInExpandedState(
   }
 }
 
-export function replaceItemInExpandedState(
+export function replaceExpandedItem(
   currentExpandedItems: ExpandedDbItem[],
   currentDbItem: DbItem,
   newDbItem: DbItem,
@@ -108,7 +108,10 @@ function isDbItemEqualToExpandedDbItem(
         expandedDbItem.kind === ExpandedDbItemKind.RemoteUserDefinedList &&
         expandedDbItem.listName === dbItem.listName
       );
-    default:
-      throw Error(`Unknown db item kind ${dbItem.kind}`);
+    case DbItemKind.LocalDatabase:
+    case DbItemKind.RemoteSystemDefinedList:
+    case DbItemKind.RemoteOwner:
+    case DbItemKind.RemoteRepo:
+      return false;
   }
 }
diff --git a/extensions/ql-vscode/src/databases/db-manager.ts b/extensions/ql-vscode/src/databases/db-manager.ts
index c86af8eb670..855db35575c 100644
--- a/extensions/ql-vscode/src/databases/db-manager.ts
+++ b/extensions/ql-vscode/src/databases/db-manager.ts
@@ -11,8 +11,8 @@ import {
   RemoteUserDefinedListDbItem,
 } from "./db-item";
 import {
-  updateItemInExpandedState,
-  replaceItemInExpandedState,
+  updateExpandedItem,
+  replaceExpandedItem,
   ExpandedDbItem,
 } from "./db-item-expansion";
 import {
@@ -80,7 +80,7 @@ export class DbManager {
   ): Promise<void> {
     const currentExpandedItems = this.getExpandedItems();
 
-    const newExpandedItems = updateItemInExpandedState(
+    const newExpandedItems = updateExpandedItem(
       currentExpandedItems,
       dbItem,
       itemExpanded,
@@ -127,7 +127,7 @@ export class DbManager {
     }
 
     const newDbItem = { ...currentDbItem, listName: newName };
-    const newExpandedItems = replaceItemInExpandedState(
+    const newExpandedItems = replaceExpandedItem(
       this.getExpandedItems(),
       currentDbItem,
       newDbItem,
diff --git a/extensions/ql-vscode/test/unit-tests/databases/db-item-expansion.test.ts b/extensions/ql-vscode/test/unit-tests/databases/db-item-expansion.test.ts
index ce6df26d034..b6ef1690dfc 100644
--- a/extensions/ql-vscode/test/unit-tests/databases/db-item-expansion.test.ts
+++ b/extensions/ql-vscode/test/unit-tests/databases/db-item-expansion.test.ts
@@ -1,12 +1,8 @@
 import {
-  RemoteUserDefinedListDbItem,
-  RootRemoteDbItem,
-} from "../../../src/databases/db-item";
-import {
-  updateItemInExpandedState,
+  updateExpandedItem,
   ExpandedDbItem,
   ExpandedDbItemKind,
-  replaceItemInExpandedState,
+  replaceExpandedItem,
 } from "../../../src/databases/db-item-expansion";
 import {
   createRemoteUserDefinedListDbItem,
@@ -14,7 +10,7 @@ import {
 } from "../../factories/db-item-factories";
 
 describe("db item expansion", () => {
-  describe("updateItemInExpandedState", () => {
+  describe("updateExpandedItem", () => {
     it("should add an expanded item to an existing list", () => {
       const currentExpandedItems: ExpandedDbItem[] = [
         {
@@ -26,12 +22,11 @@ describe("db item expansion", () => {
         },
       ];
 
-      const dbItem: RemoteUserDefinedListDbItem =
-        createRemoteUserDefinedListDbItem({
-          listName: "list2",
-        });
+      const dbItem = createRemoteUserDefinedListDbItem({
+        listName: "list2",
+      });
 
-      const newExpandedItems = updateItemInExpandedState(
+      const newExpandedItems = updateExpandedItem(
         currentExpandedItems,
         dbItem,
         true,
@@ -47,12 +42,11 @@ describe("db item expansion", () => {
     });
 
     it("should add an expanded item to an empty list", () => {
-      const dbItem: RemoteUserDefinedListDbItem =
-        createRemoteUserDefinedListDbItem({
-          listName: "list2",
-        });
+      const dbItem = createRemoteUserDefinedListDbItem({
+        listName: "list2",
+      });
 
-      const newExpandedItems = updateItemInExpandedState([], dbItem, true);
+      const newExpandedItems = updateExpandedItem([], dbItem, true);
 
       expect(newExpandedItems).toEqual([
         {
@@ -73,12 +67,11 @@ describe("db item expansion", () => {
         },
       ];
 
-      const dbItem: RemoteUserDefinedListDbItem =
-        createRemoteUserDefinedListDbItem({
-          listName: "list1",
-        });
+      const dbItem = createRemoteUserDefinedListDbItem({
+        listName: "list1",
+      });
 
-      const newExpandedItems = updateItemInExpandedState(
+      const newExpandedItems = updateExpandedItem(
         currentExpandedItems,
         dbItem,
         false,
@@ -98,9 +91,9 @@ describe("db item expansion", () => {
         },
       ];
 
-      const dbItem: RootRemoteDbItem = createRootRemoteDbItem();
+      const dbItem = createRootRemoteDbItem();
 
-      const newExpandedItems = updateItemInExpandedState(
+      const newExpandedItems = updateExpandedItem(
         currentExpandedItems,
         dbItem,
         false,
@@ -110,7 +103,7 @@ describe("db item expansion", () => {
     });
   });
 
-  describe("replaceItemInExpandedState", () => {
+  describe("replaceExpandedItem", () => {
     it("should replace the db item", () => {
       const currentExpandedItems: ExpandedDbItem[] = [
         {
@@ -134,12 +127,12 @@ describe("db item expansion", () => {
         listName: "list1",
       });
 
-      const newDbItem: RemoteUserDefinedListDbItem = {
+      const newDbItem = {
         ...currentDbItem,
         listName: "list1 (renamed)",
       };
 
-      const newExpandedItems = replaceItemInExpandedState(
+      const newExpandedItems = replaceExpandedItem(
         currentExpandedItems,
         currentDbItem,
         newDbItem,