diff --git a/reactos/drivers/usb/usbstor/pdo.c b/reactos/drivers/usb/usbstor/pdo.c
index d684ef32b63..6ce5d8f7460 100644
--- a/reactos/drivers/usb/usbstor/pdo.c
+++ b/reactos/drivers/usb/usbstor/pdo.c
@@ -1183,6 +1183,7 @@ USBSTOR_SendIrp(
     // free resources
     //
     ExFreePoolWithTag(Request, USB_STOR_TAG);
+    IoFreeMdl(Irp->MdlAddress);
     IoFreeIrp(Irp);
     return Status;
 }