diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 19cd8ca9..6f59cc19 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -2128,7 +2128,7 @@ Myghty:
 
 NCL:
   type: programming
-  color: #28431f
+  color: "#28431f"
   extensions:
   - .ncl
   tm_scope: source.ncl