diff --git a/sys/include/net/gnrc/sixlowpan/frag/vrb.h b/sys/include/net/gnrc/sixlowpan/frag/vrb.h
index b9838b842e..61d7a5d486 100644
--- a/sys/include/net/gnrc/sixlowpan/frag/vrb.h
+++ b/sys/include/net/gnrc/sixlowpan/frag/vrb.h
@@ -27,6 +27,9 @@
 
 #include "net/gnrc/netif.h"
 #include "net/gnrc/sixlowpan/config.h"
+#ifdef MODULE_GNRC_SIXLOWPAN_FRAG
+#include "net/gnrc/sixlowpan/frag.h"
+#endif /* MODULE_GNRC_SIXLOWPAN_FRAG */
 #include "net/gnrc/sixlowpan/frag/rb.h"
 #include "timex.h"