diff --git a/reactos/drivers/filesystems/ntfs/fcb.c b/reactos/drivers/filesystems/ntfs/fcb.c
index 02bbb1045ec..278ea3ee9df 100644
--- a/reactos/drivers/filesystems/ntfs/fcb.c
+++ b/reactos/drivers/filesystems/ntfs/fcb.c
@@ -414,7 +414,7 @@ NtfsMakeFCBFromDirEntry(PNTFS_VCB Vcb,
         pathName[FileName->NameLength] = UNICODE_NULL;
     }
 
-    Size = NtfsGetFileSize(Vcb, Record, Stream, wcslen(Stream), &AllocatedSize);
+    Size = NtfsGetFileSize(Vcb, Record, (Stream ? Stream : L""), (Stream ? wcslen(Stream) : 0), &AllocatedSize);
 
     rcFCB = NtfsCreateFCB(pathName, Stream, Vcb);
     if (!rcFCB)