diff --git a/src/conf/nwfilter_ipaddrmap.c b/src/conf/nwfilter_ipaddrmap.c
index 446f3de4f903c8b2a0fc7663fd4a8bd3ee596f91..9c8584ce27c953d535eb005682014dcb5f7a5474 100644
--- a/src/conf/nwfilter_ipaddrmap.c
+++ b/src/conf/nwfilter_ipaddrmap.c
@@ -61,6 +61,8 @@ virNWFilterIPAddrMapAddIPAddr(const char *ifname, char *addr)
         if (!val)
             goto cleanup;
         ret = virNWFilterHashTablePut(ipAddressMap, ifname, val);
+        if (ret < 0)
+            virNWFilterVarValueFree(val);
         goto cleanup;
     } else {
         if (virNWFilterVarValueAddValue(val, addr) < 0)