diff --git a/ospfd/ospf_zebra.c b/ospfd/ospf_zebra.c
index 5520c08..6a675a5 100644
--- a/ospfd/ospf_zebra.c
+++ b/ospfd/ospf_zebra.c
@@ -139,7 +139,7 @@
   stream_get (ifname_tmp, s, INTERFACE_NAMSIZ);
 
   /* Lookup this by interface index. */
-  ifp = if_lookup_by_name (ifname_tmp);
+  ifp = if_lookup_by_name ((char *) ifname_tmp);
 
   /* If such interface does not exist, indicate an error */
   if (!ifp)