diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 65462354..c9044fd7 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -1404,6 +1404,7 @@ Nimrod:
 
 Nix:
   type: programming
+  lexer: Nix
   extensions:
   - .nix