diff --git a/isisd/isis_redist.c b/isisd/isis_redist.c
index 690ae47..ad0a31b 100644
--- a/isisd/isis_redist.c
+++ b/isisd/isis_redist.c
@@ -52,6 +52,7 @@
     return 1;
 
   assert(!"Unsupported address family!");
+  return 0;
 }
 
 static int