diff --git a/dlls/msvcr100/tests/msvcr100.c b/dlls/msvcr100/tests/msvcr100.c
index b2346a89b51..f02f5ea89e9 100644
--- a/dlls/msvcr100/tests/msvcr100.c
+++ b/dlls/msvcr100/tests/msvcr100.c
@@ -936,6 +936,7 @@ static void test_ExternalContextBase(void)
     thread = CreateThread(NULL, 0, external_context_thread, NULL, 0, NULL);
     ok(thread != NULL, "CreateThread failed: %d\n", GetLastError());
     WaitForSingleObject(thread, INFINITE);
+    CloseHandle(thread);
 }
 
 static void test_Scheduler(void)