1 files changed, 1 insertions, 1 deletions
diff --git a/sem_post.c b/sem_post.c
index 1d607e8..7e20659 100644
--- a/sem_post.c
+++ b/sem_post.c
@@ -85,7 +85,7 @@ sem_post (sem_t * sem)
 
 #else /* NEED_SEM */
 
-    else if (InterlockedExchangeAdd((LPLONG) &(*sem)->value, (LONG) 1) < 0
+    else if (InterlockedIncrement((LPLONG) &(*sem)->value) <= 0
 	     && !ReleaseSemaphore((*sem)->sem, 1, NULL))
 
 #endif /* NEED_SEM */