diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 3d231c35..2dbea679 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1352,6 +1352,7 @@ Visual Basic:
   - .frx
   - .vba
   - .vbs
+  - .frm
 
 XC:
   type: programming