diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index de8600f2..2ccc57a9 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1144,8 +1144,6 @@ LLVM:
 LSL:
   type: programming
   lexer: LSL
-  aliases:
-  - lsl
   ace_mode: lsl
   extensions:
   - .lsl