diff --git a/src/vz/vz_driver.c b/src/vz/vz_driver.c
index 723ef194b2..2f1e00f420 100644
--- a/src/vz/vz_driver.c
+++ b/src/vz/vz_driver.c
@@ -555,7 +555,7 @@ vzDomainLookupByID(virConnectPtr conn, int id)
     virDomainPtr ret = NULL;
     virDomainObjPtr dom;
 
-    dom = virDomainObjListFindByID(privconn->driver->domains, id);
+    dom = virDomainObjListFindByIDRef(privconn->driver->domains, id);
 
     if (dom == NULL) {
         virReportError(VIR_ERR_NO_DOMAIN, NULL);
@@ -568,7 +568,7 @@ vzDomainLookupByID(virConnectPtr conn, int id)
     ret = virGetDomain(conn, dom->def->name, dom->def->uuid, dom->def->id);
 
  cleanup:
-    virObjectUnlock(dom);
+    virDomainObjEndAPI(&dom);
     return ret;
 }
 
@@ -579,7 +579,7 @@ vzDomainLookupByUUID(virConnectPtr conn, const unsigned char *uuid)
     virDomainPtr ret = NULL;
     virDomainObjPtr dom;
 
-    dom = virDomainObjListFindByUUID(privconn->driver->domains, uuid);
+    dom = virDomainObjListFindByUUIDRef(privconn->driver->domains, uuid);
 
     if (dom == NULL) {
         char uuidstr[VIR_UUID_STRING_BUFLEN];
@@ -595,7 +595,7 @@ vzDomainLookupByUUID(virConnectPtr conn, const unsigned char *uuid)
     ret = virGetDomain(conn, dom->def->name, dom->def->uuid, dom->def->id);
 
  cleanup:
-    virObjectUnlock(dom);
+    virDomainObjEndAPI(&dom);
     return ret;
 }
 
diff --git a/src/vz/vz_sdk.c b/src/vz/vz_sdk.c
index a5b9f2da67..871ad843e2 100644
--- a/src/vz/vz_sdk.c
+++ b/src/vz/vz_sdk.c
@@ -2144,7 +2144,7 @@ prlsdkHandleVmStateEvent(vzDriverPtr driver,
     virDomainEventType lvEventType = 0;
     int lvEventTypeDetails = 0;
 
-    dom = virDomainObjListFindByUUID(driver->domains, uuid);
+    dom = virDomainObjListFindByUUIDRef(driver->domains, uuid);
     if (dom == NULL)
         return;
 
@@ -2166,7 +2166,7 @@ prlsdkHandleVmStateEvent(vzDriverPtr driver,
 
  cleanup:
     PrlHandle_Free(eventParam);
-    virObjectUnlock(dom);
+    virDomainObjEndAPI(&dom);
     return;
 }
 
@@ -2225,7 +2225,7 @@ prlsdkHandleVmRemovedEvent(vzDriverPtr driver,
 {
     virDomainObjPtr dom = NULL;
 
-    dom = virDomainObjListFindByUUID(driver->domains, uuid);
+    dom = virDomainObjListFindByUUIDRef(driver->domains, uuid);
     /* domain was removed from the list from the libvirt
      * API function in current connection */
     if (dom == NULL)
@@ -2235,6 +2235,8 @@ prlsdkHandleVmRemovedEvent(vzDriverPtr driver,
                     VIR_DOMAIN_EVENT_UNDEFINED_REMOVED);
 
     virDomainObjListRemove(driver->domains, dom);
+    virObjectLock(dom);
+    virDomainObjEndAPI(&dom);
     return;
 }
 
@@ -2246,7 +2248,7 @@ prlsdkHandlePerfEvent(vzDriverPtr driver,
     virDomainObjPtr dom = NULL;
     vzDomObjPtr privdom = NULL;
 
-    if (!(dom = virDomainObjListFindByUUID(driver->domains, uuid))) {
+    if (!(dom = virDomainObjListFindByUUIDRef(driver->domains, uuid))) {
         PrlHandle_Free(event);
         return;
     }
@@ -2255,7 +2257,7 @@ prlsdkHandlePerfEvent(vzDriverPtr driver,
     PrlHandle_Free(privdom->stats);
     privdom->stats = event;
 
-    virObjectUnlock(dom);
+    virDomainObjEndAPI(&dom);
 }
 
 static void
@@ -2269,7 +2271,7 @@ prlsdkHandleMigrationProgress(vzDriverPtr driver,
     PRL_HANDLE param = PRL_INVALID_HANDLE;
     PRL_RESULT pret;
 
-    if (!(dom = virDomainObjListFindByUUID(driver->domains, uuid)))
+    if (!(dom = virDomainObjListFindByUUIDRef(driver->domains, uuid)))
         return;
 
     pret = PrlEvent_GetParam(event, 0, &param);
@@ -2283,7 +2285,7 @@ prlsdkHandleMigrationProgress(vzDriverPtr driver,
 
  cleanup:
     PrlHandle_Free(param);
-    virObjectUnlock(dom);
+    virDomainObjEndAPI(&dom);
 }
 
 static PRL_RESULT