diff --git a/sys/net/gnrc/network_layer/sixlowpan/frag/rbuf.c b/sys/net/gnrc/network_layer/sixlowpan/frag/rbuf.c
index 394c6c5252ef2..9ca95f9375dda 100644
--- a/sys/net/gnrc/network_layer/sixlowpan/frag/rbuf.c
+++ b/sys/net/gnrc/network_layer/sixlowpan/frag/rbuf.c
@@ -21,6 +21,9 @@
 #include "net/gnrc.h"
 #include "net/gnrc/sixlowpan.h"
 #include "net/gnrc/sixlowpan/frag.h"
+#ifdef  MODULE_GNRC_SIXLOWPAN_FRAG_VRB
+#include "net/gnrc/sixlowpan/frag/vrb.h"
+#endif  /* MODULE_GNRC_SIXLOWPAN_FRAG_VRB */
 #include "net/sixlowpan.h"
 #include "thread.h"
 #include "xtimer.h"
@@ -264,7 +267,7 @@ void rbuf_gc(void)
 
     for (i = 0; i < RBUF_SIZE; i++) {
         /* since pkt occupies pktbuf, aggressivly collect garbage */
-        if ((rbuf[i].pkt != NULL) &&
+        if (!rbuf_entry_empty(&rbuf[i]) &&
               ((now_usec - rbuf[i].super.arrival) > RBUF_TIMEOUT)) {
             DEBUG("6lo rfrag: entry (%s, ",
                   gnrc_netif_addr_to_str(rbuf[i].super.src,
@@ -280,6 +283,9 @@ void rbuf_gc(void)
             rbuf_rm(&(rbuf[i]));
         }
     }
+#ifdef MODULE_GNRC_SIXLOWPAN_FRAG_VRB
+    gnrc_sixlowpan_frag_vrb_gc();
+#endif
 }
 
 static inline void _set_rbuf_timeout(void)