diff --git a/runtime/GCCLibraries/libpthread/pthread.c b/runtime/GCCLibraries/libpthread/pthread.c
index cb5818ccc2f..8b137891791 100644
--- a/runtime/GCCLibraries/libpthread/pthread.c
+++ b/runtime/GCCLibraries/libpthread/pthread.c
@@ -1,8 +1 @@
-#include <pthread.h>
-
-int
-pthread_once (pthread_once_t * control, void (*func) (void))
-{
-  return 0;
-}