diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 14def669..f90e7f17 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -2396,7 +2396,7 @@ mupad:
 nesC:
   type: programming
   color: "#ffce3b"
-  lexer: nesc
+  lexer: nesC
   extensions:
   - .nc