diff --git a/drivers/usb/usbstor/queue.c b/drivers/usb/usbstor/queue.c
index f31b62bb204..cda2d28d2e3 100644
--- a/drivers/usb/usbstor/queue.c
+++ b/drivers/usb/usbstor/queue.c
@@ -29,6 +29,11 @@ USBSTOR_QueueInitialize(
     // initialize irp list head
     //
     InitializeListHead(&FDODeviceExtension->IrpListHead);
+
+    //
+    // initialize event
+    //
+    KeInitializeEvent(&FDODeviceExtension->NoPendingRequests, NotificationEvent, TRUE);
 }
 
 VOID