diff --git a/drivers/filters/mountmgr/device.c b/drivers/filters/mountmgr/device.c
index 7172a3b5da8..ce8f58ce855 100644
--- a/drivers/filters/mountmgr/device.c
+++ b/drivers/filters/mountmgr/device.c
@@ -57,7 +57,7 @@ MountMgrChangeNotify(IN PDEVICE_EXTENSION DeviceExtension,
     if (DeviceExtension->EpicNumber != ChangeNotify->EpicNumber)
     {
         ChangeNotify->EpicNumber = DeviceExtension->EpicNumber;
-        Irp->IoStatus.Information = 0;
+        Irp->IoStatus.Information = sizeof(MOUNTMGR_CHANGE_NOTIFY_INFO);
         return STATUS_SUCCESS;
     }