diff --git a/src/openvz/openvz_driver.c b/src/openvz/openvz_driver.c
index 64f5219fd9..17919bea67 100644
--- a/src/openvz/openvz_driver.c
+++ b/src/openvz/openvz_driver.c
@@ -910,6 +910,8 @@ openvzDomainSetNetwork(virConnectPtr conn, const char *vpsid,
         /* --ipadd ip */
         for (i = 0; i < net->nips; i++) {
             char *ipStr = virSocketAddrFormat(&net->ips[i]->address);
+            if (!ipStr)
+                goto cleanup;
             virCommandAddArgList(cmd, "--ipadd", ipStr, NULL);
             VIR_FREE(ipStr);
         }