diff --git a/include/common/buf.h b/include/common/buf.h
index a1355e6..4208820 100644
--- a/include/common/buf.h
+++ b/include/common/buf.h
@@ -29,6 +29,7 @@
 #define _COMMON_BUF_H
 
 #include <stdint.h>
+#include <string.h>
 
 /* Structure defining a buffer's head */
 struct buffer {