diff --git a/src/conf/nwfilter_conf.c b/src/conf/nwfilter_conf.c
index 08934fb0af..7c71ece18b 100644
--- a/src/conf/nwfilter_conf.c
+++ b/src/conf/nwfilter_conf.c
@@ -2375,7 +2375,7 @@ virNWFilterRuleDefDetailsFormat(virConnectPtr conn,
                                 const virXMLAttr2Struct *att,
                                 virNWFilterRuleDefPtr def)
 {
-    int i, j;
+    int i = 0, j;
     bool typeShown = 0;
     bool neverShown = 1;
     enum match {