diff --git a/src/cache.c b/src/cache.c
index 8c99e6c..ecc4a78 100644
--- a/src/cache.c
+++ b/src/cache.c
@@ -298,7 +298,7 @@
 
 static int is_outdated_cname_pointer(struct crec *crecp)
 {
-  if (!(crecp->flags & F_CNAME) || crecp->addr.cname.uid == 0)
+  if (!(crecp->flags & F_CNAME) || crecp->addr.cname.uid == SRC_INTERFACE)
     return 0;
   
   /* NB. record may be reused as DS or DNSKEY, where uid is 
diff --git a/src/rfc1035.c b/src/rfc1035.c
index 236d726..9f5570c 100644
--- a/src/rfc1035.c
+++ b/src/rfc1035.c
@@ -2018,7 +2018,7 @@
 			    
 			    strcpy(name, cname_target);
 			    /* check if target interface_name */
-			    if (crecp->addr.cname.uid == 0)
+			    if (crecp->addr.cname.uid == SRC_INTERFACE)
 			      goto intname_restart;
 			    else
 			      goto cname_restart;