diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 235b9064..1c5b5a01 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -685,6 +685,7 @@ LLVM:
 
 Lasso:
   type: programming
+  lexer: Lasso
   ace_mode: lasso
   color: "#2584c3"
   primary_extension: .lasso