--- libev/ev.c	2012/04/18 06:09:29	1.422
+++ libev/ev.c	2012/04/22 10:14:20	1.423
@@ -361,7 +361,7 @@
 /* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
 /* which makes programs even slower. might work on other unices, too. */
 #if EV_USE_CLOCK_SYSCALL
-# include <syscall.h>
+# include <sys/syscall.h>
 # ifdef SYS_clock_gettime
 #  define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
 #  undef EV_USE_MONOTONIC