diff --git a/src/thread/bsdi/SDL_syssem.c b/src/thread/bsdi/SDL_syssem.c
index 56faeef2e..607b7f67b 100644
--- a/src/thread/bsdi/SDL_syssem.c
+++ b/src/thread/bsdi/SDL_syssem.c
@@ -266,7 +266,6 @@ int SDL_SemPost(SDL_sem *sem)
  */
 
 #include <errno.h>
-#include <semaphore.h>
 #include <pthread.h>
 
 /* Begin thread_private.h kluge */