diff --git a/templates/Settings.php.erb b/templates/Settings.php.erb
index 47a5f71..c1b8391 100644
--- a/templates/Settings.php.erb
+++ b/templates/Settings.php.erb
@@ -105,7 +105,6 @@ $wgUseImageMagick = true;
 $wgImageMagickConvertCommand = "/usr/bin/convert";
 $wgUploadDirectory = "/srv/mediawiki/images";
 $wgFileExtensions[] = 'svg';
-$wgFileExtensions[] = 'pdf';
 
 # InstantCommons allows wiki to use images from http://commons.wikimedia.org
 $wgUseInstantCommons  = false;