diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index e2c82ab8..49797109 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1468,6 +1468,7 @@ J:
 JFlex:
   type: programming
   color: "#DBCA00"
+  group: Lex
   extensions:
   - .flex
   - .jflex
@@ -1703,6 +1704,17 @@ Less:
   tm_scope: source.css.less
   ace_mode: less
 
+Lex:
+  type: programming
+  color: "#DBCA00"
+  aliases:
+  - flex
+  extensions:
+  - .l
+  - .lex
+  tm_scope: none
+  ace_mode: text
+
 LilyPond:
   type: programming
   extensions: