diff --git a/lib/roken/ct.c b/lib/roken/ct.c
index 5633dcef8..0778c2d47 100644
--- a/lib/roken/ct.c
+++ b/lib/roken/ct.c
@@ -32,8 +32,7 @@
  */
 
 #include <config.h>
-
-#include <sys/types.h>
+#include "roken.h"
 
 /**
  * Constant time compare to memory regions. The reason for making it