diff --git a/Python/condvar.h b/Python/condvar.h
index fe6bd74..72b08f9 100644
--- a/Python/condvar.h
+++ b/Python/condvar.h
@@ -242,7 +242,7 @@
      * but we are safe because we are using a semaphore wich has an internal
      * count.
      */
-    wait = WaitForSingleObject(cv->sem, ms);
+    wait = WaitForSingleObjectEx(cv->sem, ms, FALSE);
     PyMUTEX_LOCK(cs);
     if (wait != WAIT_OBJECT_0)
         --cv->waiting;
diff --git a/Python/thread_nt.h b/Python/thread_nt.h
index 938bf1e..bd604fb 100644
--- a/Python/thread_nt.h
+++ b/Python/thread_nt.h
@@ -130,7 +130,7 @@
 DWORD
 EnterNonRecursiveMutex(PNRMUTEX mutex, DWORD milliseconds)
 {
-    return WaitForSingleObject(mutex, milliseconds);
+    return WaitForSingleObjectEx(mutex, milliseconds, FALSE);
 }
 
 BOOL