diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 8168dc52fa..3cdb5e3486 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -17892,6 +17892,7 @@ virDomainDefParseXML(xmlDocPtr xml,
                 }
                 def->ioapic = value;
                 def->features[val] = VIR_TRISTATE_SWITCH_ON;
+                VIR_FREE(tmp);
             }
             ctxt->node = node;
             break;