diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 3290a9d3..ff0bba05 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1194,8 +1194,6 @@ TXL:
   type: programming
   lexer: Text only
   primary_extension: .txl
-  extensions:
-  - .txl
 
 Tcl:
   type: programming