diff --git a/Modules/FindThreads.cmake b/Modules/FindThreads.cmake
index 64576ebf56..85174d93d6 100644
--- a/Modules/FindThreads.cmake
+++ b/Modules/FindThreads.cmake
@@ -63,6 +63,7 @@ int main(void)
   pthread_t thread;
   pthread_create(&thread, NULL, test_func, NULL);
   pthread_detach(thread);
+  pthread_cancel(thread);
   pthread_join(thread, NULL);
   pthread_atfork(NULL, NULL, NULL);
   pthread_exit(NULL);