diff --git a/zebra/zserv.c b/zebra/zserv.c
index 0f30a55..833b369 100644
--- a/zebra/zserv.c
+++ b/zebra/zserv.c
@@ -862,6 +862,9 @@
 	      case ZEBRA_NEXTHOP_IFNAME:
 		stream_putl (s, nexthop->ifindex);
 		break;
+	      default:
+                /* do nothing */
+		break;
 	      }
 	    num++;
 	  }
@@ -921,6 +924,9 @@
 	      case ZEBRA_NEXTHOP_IFNAME:
 		stream_putl (s, nexthop->ifindex);
 		break;
+	      default:
+                /* do nothing */
+		break;
 	      }
 	    num++;
 	  }
@@ -979,6 +985,9 @@
 	      case ZEBRA_NEXTHOP_IFNAME:
 		stream_putl (s, nexthop->ifindex);
 		break;
+	      default:
+                /* do nothing */
+		break;
 	      }
 	    num++;
 	  }