diff --git a/reactos/drivers/filesystems/ntfs/mft.c b/reactos/drivers/filesystems/ntfs/mft.c
index 3a3f00e0ab9..32774d2db12 100644
--- a/reactos/drivers/filesystems/ntfs/mft.c
+++ b/reactos/drivers/filesystems/ntfs/mft.c
@@ -478,7 +478,7 @@ CompareFileName(PUNICODE_STRING FileName,
         UNICODE_STRING IntFileName;
         if (IndexEntry->FileName.NameType != NTFS_FILE_NAME_POSIX)
         {
-            ASSERT(NT_SUCCESS(RtlUpcaseUnicodeString(&IntFileName, FileName, TRUE)));
+            NT_VERIFY(NT_SUCCESS(RtlUpcaseUnicodeString(&IntFileName, FileName, TRUE)));
             Alloc = TRUE;
         }
         else