diff --git a/extensions/ql-vscode/src/databases/ui/db-tree-view-item.ts b/extensions/ql-vscode/src/databases/ui/db-tree-view-item.ts
index f0e5cf8d110..67e7161f99b 100644
--- a/extensions/ql-vscode/src/databases/ui/db-tree-view-item.ts
+++ b/extensions/ql-vscode/src/databases/ui/db-tree-view-item.ts
@@ -15,8 +15,11 @@ import {
  */
 export class DbTreeViewItem extends vscode.TreeItem {
   constructor(
+    // iconPath and tooltip must have those names because
+    // they are part of the vscode.TreeItem interface
+
     public readonly dbItem: DbItem | undefined,
-    public readonly icon: vscode.ThemeIcon | undefined,
+    public readonly iconPath: vscode.ThemeIcon | undefined,
     public readonly label: string,
     public readonly tooltip: string | undefined,
     public readonly collapsibleState: vscode.TreeItemCollapsibleState,
diff --git a/extensions/ql-vscode/src/vscode-tests/minimal-workspace/databases/db-panel.test.ts b/extensions/ql-vscode/src/vscode-tests/minimal-workspace/databases/db-panel.test.ts
index 6337861c43e..9ec8883ced4 100644
--- a/extensions/ql-vscode/src/vscode-tests/minimal-workspace/databases/db-panel.test.ts
+++ b/extensions/ql-vscode/src/vscode-tests/minimal-workspace/databases/db-panel.test.ts
@@ -230,7 +230,7 @@ describe('db panel', async () => {
   ): void {
     expect(item.label).to.equal(`Top ${n} repositories`);
     expect(item.tooltip).to.equal(`Top ${n} repositories of a language`);
-    expect(item.icon).to.deep.equal(new vscode.ThemeIcon('github'));
+    expect(item.iconPath).to.deep.equal(new vscode.ThemeIcon('github'));
     expect(item.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.None);
   }
 
@@ -241,7 +241,7 @@ describe('db panel', async () => {
   ): void {
     expect(item.label).to.equal(listName);
     expect(item.tooltip).to.be.undefined;
-    expect(item.icon).to.be.undefined;
+    expect(item.iconPath).to.be.undefined;
     expect(item.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.Collapsed);
     expect(item.children).to.be.ok;
     expect(item.children.length).to.equal(repos.length);
@@ -257,7 +257,7 @@ describe('db panel', async () => {
   ): void {
     expect(item.label).to.equal(ownerName);
     expect(item.tooltip).to.be.undefined;
-    expect(item.icon).to.deep.equal(new vscode.ThemeIcon('organization'));
+    expect(item.iconPath).to.deep.equal(new vscode.ThemeIcon('organization'));
     expect(item.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.None);
     expect(item.children).to.be.ok;
     expect(item.children.length).to.equal(0);
@@ -269,7 +269,7 @@ describe('db panel', async () => {
   ): void {
     expect(item.label).to.equal(repoName);
     expect(item.tooltip).to.be.undefined;
-    expect(item.icon).to.deep.equal(new vscode.ThemeIcon('database'));
+    expect(item.iconPath).to.deep.equal(new vscode.ThemeIcon('database'));
     expect(item.collapsibleState).to.equal(vscode.TreeItemCollapsibleState.None);
   }
 });