diff --git a/lib/curl_threads.c b/lib/curl_threads.c
index cc91f68bc3..015b573d9f 100644
--- a/lib/curl_threads.c
+++ b/lib/curl_threads.c
@@ -161,7 +161,7 @@ void Curl_thread_destroy(curl_thread_t *hnd)
 
 int Curl_thread_join(curl_thread_t *hnd)
 {
-#if !defined(_WIN32_WINNT) || (_WIN32_WINNT < _WIN32_WINNT_VISTA)
+#ifdef UNDER_CE
   int ret = (WaitForSingleObject(*hnd, INFINITE) == WAIT_OBJECT_0);
 #else
   int ret = (WaitForSingleObjectEx(*hnd, INFINITE, FALSE) == WAIT_OBJECT_0);