diff --git a/lldb/test/API/windows/launch/missing-dll/TestMissingDll.py b/lldb/test/API/windows/launch/missing-dll/TestMissingDll.py
index 32fc266c0fde6..d1e972c7f0bcb 100644
--- a/lldb/test/API/windows/launch/missing-dll/TestMissingDll.py
+++ b/lldb/test/API/windows/launch/missing-dll/TestMissingDll.py
@@ -25,4 +25,5 @@ def test(self):
 
         error = lldb.SBError()
         target.Launch(launch_info, error)
-        self.assertFailure(error, "Process prematurely exited with 0xc0000135")
+        self.assertFalse(error.Success(), "expected launch to fail")
+        self.assertIn("Process prematurely exited with 0xc0000135", error.GetCString())