diff --git a/httpp/encoding.c b/httpp/encoding.c
index 70d2b34..4a4dd4e 100644
--- a/httpp/encoding.c
+++ b/httpp/encoding.c
@@ -27,6 +27,7 @@
 #endif
 
 #include <sys/types.h>
+#include <strings.h>
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>