diff --git a/common_lib/interfaces/clib_types.h b/common_lib/interfaces/clib_types.h
old mode 100644
new mode 100755
index 30ff5be..de3a5e9
--- a/common_lib/interfaces/clib_types.h
+++ b/common_lib/interfaces/clib_types.h
@@ -17,6 +17,7 @@
 #define CLIB_TYPES_H
 
 #include <stdint.h>
+#include <stdio.h>
 
 typedef uint32_t HcBool;
 #define HC_TRUE 1