diff --git a/src/conf/domain_event.c b/src/conf/domain_event.c
index 97d58c2521..7e9bd08381 100644
--- a/src/conf/domain_event.c
+++ b/src/conf/domain_event.c
@@ -1515,6 +1515,7 @@ virDomainEventTunableNew(int id,
 
  error:
     virTypedParamsFree(*params, nparams);
+    *params = NULL;
     return NULL;
 }