diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index 805891c3..aaa3a455 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -67,7 +67,7 @@ ApacheConf:
   type: markup
   aliases:
   - apache
-  primary_extension: .conf
+  primary_extension: .apacheconf
   filenames:
   - .htaccess
   - httpd.conf
@@ -833,7 +833,7 @@ Nemerle:
 Nginx:
   type: markup
   lexer: Nginx configuration file
-  primary_extension: .conf
+  primary_extension: .nginxconf
   filenames:
   - nginx.conf