diff --git a/reactos/win32ss/user/ntuser/main.c b/reactos/win32ss/user/ntuser/main.c
index 905fa04e503..e6df046d1ca 100644
--- a/reactos/win32ss/user/ntuser/main.c
+++ b/reactos/win32ss/user/ntuser/main.c
@@ -266,6 +266,7 @@ UserCreateThreadInfo(struct _ETHREAD *Thread)
     NTSTATUS Status = STATUS_SUCCESS;
     PTEB pTeb;
     LARGE_INTEGER LargeTickCount;
+    OBJECT_ATTRIBUTES EventQueueObjAttr;
 
     Process = Thread->ThreadsProcess;
 
@@ -313,6 +314,7 @@ UserCreateThreadInfo(struct _ETHREAD *Thread)
     ptiCurrent->ppi->cThreads++;
 
     ptiCurrent->hEventQueueClient = NULL;
+    InitializeObjectAttributes(&EventQueueObjAttr, NULL, OBJ_KERNEL_HANDLE, NULL, NULL);
     Status = ZwCreateEvent(&ptiCurrent->hEventQueueClient, EVENT_ALL_ACCESS,
                             NULL, SynchronizationEvent, FALSE);
     if (!NT_SUCCESS(Status))