diff --git a/extensions/vscode-api-tests/src/singlefolder-tests/workspace.tasks.test.ts b/extensions/vscode-api-tests/src/singlefolder-tests/workspace.tasks.test.ts
index f5114994c728e319cdef7a01db92ecd4b833f553..7f21223b3448bd106124551c03e976c6f322655b 100644
--- a/extensions/vscode-api-tests/src/singlefolder-tests/workspace.tasks.test.ts
+++ b/extensions/vscode-api-tests/src/singlefolder-tests/workspace.tasks.test.ts
@@ -23,7 +23,7 @@ suite('workspace-namespace', () => {
 				reg1.dispose();
 				const reg2 = vscode.window.onDidWriteTerminalData(e => {
 					reg2.dispose();
-					assert.equal(e, 'testing\r\n');
+					assert.equal(e.data, 'testing\r\n');
 					term.dispose();
 				});
 			});