diff --git a/xcape.c b/xcape.c
index b5cfb45..f64c8cc 100644
--- a/xcape.c
+++ b/xcape.c
@@ -24,7 +24,6 @@
 #include <signal.h>
 #include <unistd.h>
 #include <pthread.h>
-#include <semaphore.h>
 #include <X11/Xlib.h>
 #include <X11/keysym.h>
 #include <X11/extensions/record.h>