diff --git a/sys/include/net/ndp.h b/sys/include/net/ndp.h
index e2843b5d6a10..209ebfd59920 100644
--- a/sys/include/net/ndp.h
+++ b/sys/include/net/ndp.h
@@ -23,6 +23,7 @@
 #include <stdint.h>
 
 #include "byteorder.h"
+#include "net/ipv6/addr.h"
 
 #ifdef __cplusplus
 extern "C" {