diff --git a/backport.md b/backport.md
index f1a671b..b0b0423 100644
--- a/backport.md
+++ b/backport.md
@@ -1,6 +1,8 @@
 
 ## How to backport
 
+This guide is for windows 7 only
+
 > Steps needed before backporting:
 
 [Download CFF explorer](https://ntcore.com/explorer-suite/)