diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 95a51a54..ad3c27ea 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -634,8 +634,6 @@ JSON:
   ace_mode: json
   searchable: false
   primary_extension: .json
-  extensions:
-  - .json
 
 Java:
   type: programming