[NTOSKRNL]

[reactos.git] / reactos / ntoskrnl / io / iomgr / file.c

diff --git a/reactos/ntoskrnl/io/iomgr/file.c b/reactos/ntoskrnl/io/iomgr/file.c
index bcb3fd1..8f515b2 100644 (file)
--- a/reactos/ntoskrnl/io/iomgr/file.c
+++ b/reactos/ntoskrnl/io/iomgr/file.c
@@ -203,7 +203,7 @@ IopDoNameTransmogrify(IN PIRP Irp,
         Length = DataBuffer->MountPointReparseBuffer.SubstituteNameLength;
 
         /* Check we don't overflow */
-        if ((MAXUSHORT - DataBuffer->Reserved) <= (Length + sizeof(UNICODE_NULL)))
+        if (((ULONG)MAXUSHORT - DataBuffer->Reserved) <= (Length + sizeof(UNICODE_NULL)))
         {
             Irp->IoStatus.Status = STATUS_IO_REPARSE_DATA_INVALID;
         }