diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index e21dfbf4..5d32708f 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -238,6 +238,7 @@ ChucK:
 Clean:
   type: programming
   color: "#3a81ad"
+  lexer: Text only
   primary_extension: .icl
   extensions:
   - .dcl