diff --git a/Info/Layer3/Foundry.pm b/Info/Layer3/Foundry.pm
index 99bf0114..5f018a7f 100644
--- a/Info/Layer3/Foundry.pm
+++ b/Info/Layer3/Foundry.pm
@@ -203,7 +203,8 @@ sub model {
 
     $model = $1 if $desc =~ /\s+([a-z]{2}\d{4})\D/i;
     $model = $1 if $desc =~ /\b(FW[A-Z\d]+)/;
-    
+
+    $model =~ s/^sn//;
 
     return $model;
 }