diff --git a/sys/net/gnrc/network_layer/sixlowpan/nd/gnrc_sixlowpan_nd.c b/sys/net/gnrc/network_layer/sixlowpan/nd/gnrc_sixlowpan_nd.c
index 863143d137..29feee7f6c 100644
--- a/sys/net/gnrc/network_layer/sixlowpan/nd/gnrc_sixlowpan_nd.c
+++ b/sys/net/gnrc/network_layer/sixlowpan/nd/gnrc_sixlowpan_nd.c
@@ -295,6 +295,7 @@ uint8_t gnrc_sixlowpan_nd_opt_ar_handle(kernel_pid_t iface, ipv6_hdr_t *ipv6, ui
                     DEBUG("6lo nd: unknown status for registration received\n");
                     break;
             }
+            break;
 #ifdef MODULE_GNRC_SIXLOWPAN_ND_ROUTER
         case ICMPV6_NBR_SOL:
             if (!(ipv6_iface->flags & GNRC_IPV6_NETIF_FLAGS_SIXLOWPAN) &&
@@ -339,6 +340,7 @@ uint8_t gnrc_sixlowpan_nd_opt_ar_handle(kernel_pid_t iface, ipv6_hdr_t *ipv6, ui
                 vtimer_set_msg(&nc_entry->type_timeout, timex_set(reg_ltime * 60, 0),
                                gnrc_ipv6_pid, GNRC_SIXLOWPAN_ND_MSG_AR_TIMEOUT, nc_entry);
             }
+            break;
 #endif
         default:
             break;