diff --git a/src/vs/workbench/api/browser/mainThreadEditorTabs.ts b/src/vs/workbench/api/browser/mainThreadEditorTabs.ts
index bda93934177..09efeab8cde 100644
--- a/src/vs/workbench/api/browser/mainThreadEditorTabs.ts
+++ b/src/vs/workbench/api/browser/mainThreadEditorTabs.ts
@@ -194,7 +194,7 @@ export class MainThreadEditorTabs implements MainThreadEditorTabsShape {
 	private _generateTabId(editor: EditorInput, groupId: number) {
 		let resourceString: string | undefined;
 		// Properly get the resource and account for side by side editors
-		const resource = EditorResourceAccessor.getOriginalUri(editor, { supportSideBySide: SideBySideEditor.BOTH });
+		const resource = EditorResourceAccessor.getCanonicalUri(editor, { supportSideBySide: SideBySideEditor.BOTH });
 		if (resource instanceof URI) {
 			resourceString = resource.toString();
 		} else {