diff --git a/modules/clock.c b/modules/clock.c
index 2956a40..eddc7be 100644
--- a/modules/clock.c
+++ b/modules/clock.c
@@ -67,7 +67,6 @@ content(struct module *mod)
     return exposable;
 }
 
-#include <pthread.h>
 static int
 run(struct module *mod)
 {