diff --git a/include/pcp/util.h b/include/pcp/util.h
index f1637ac..bc5b7fe 100644
--- a/include/pcp/util.h
+++ b/include/pcp/util.h
@@ -36,6 +36,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
+#include <stdint.h>
 #include "platform.h"
 #include "defines.h"