diff --git a/src/conf/domain_event.c b/src/conf/domain_event.c
index e88aafea8cb2a5377d18b35db46f2f0ef98c48f5..5f086bd224a6263147da47b3ebca40b6f38f71ad 100644
--- a/src/conf/domain_event.c
+++ b/src/conf/domain_event.c
@@ -472,6 +472,7 @@ void virDomainEventFree(virDomainEventPtr event)
         return;
 
     switch (event->eventID) {
+    case VIR_DOMAIN_EVENT_ID_IO_ERROR_REASON:
     case VIR_DOMAIN_EVENT_ID_IO_ERROR:
         VIR_FREE(event->data.ioError.srcPath);
         VIR_FREE(event->data.ioError.devAlias);