diff --git a/server/semaphore.c b/server/semaphore.c
index b8eb9b7..80f9626 100644
--- a/server/semaphore.c
+++ b/server/semaphore.c
@@ -18,6 +18,9 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 
+#include "config.h"
+#include "wine/port.h"
+
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>