diff --git a/extensions/vscode-api-tests/src/singlefolder-tests/commands.test.ts b/extensions/vscode-api-tests/src/singlefolder-tests/commands.test.ts
index fba9348435c..739ce386371 100644
--- a/extensions/vscode-api-tests/src/singlefolder-tests/commands.test.ts
+++ b/extensions/vscode-api-tests/src/singlefolder-tests/commands.test.ts
@@ -105,7 +105,7 @@ suite('commands namespace tests', () => {
 	});
 
 	test('api-command: vscode.open', function () {
-		let uri = Uri.parse(workspace.workspaceFolders![0].uri.toString() + '/image.png');
+		let uri = Uri.parse(workspace.workspaceFolders![0].uri.toString() + '/far.js');
 		let a = commands.executeCommand('vscode.open', uri).then(() => assert.ok(true), () => assert.ok(false));
 		let b = commands.executeCommand('vscode.open', uri, ViewColumn.Two).then(() => assert.ok(true), () => assert.ok(false));
 		let c = commands.executeCommand('vscode.open').then(() => assert.ok(false), () => assert.ok(true));