diff --git a/tests/smoke/hello_cube/harness.cpp b/tests/smoke/hello_cube/harness.cpp
index 2be1904..ab694b0 100644
--- a/tests/smoke/hello_cube/harness.cpp
+++ b/tests/smoke/hello_cube/harness.cpp
@@ -76,4 +76,5 @@ bool test_shutdown()
   }
 
   KrShutdown();
+  return true;
 }