diff --git a/INSTALL.debian b/INSTALL.debian
index ec9d1f35f..6a68766a8 100644
--- a/INSTALL.debian
+++ b/INSTALL.debian
@@ -86,6 +86,8 @@ sudo -u danbooru ssh-keygen
 
 mkdir -p /var/www/danbooru2/shared/config
 mkdir -p /var/www/danbooru2/shared/data
+mkdir -p /var/www/danbooru2/shared/data/preview
+mkdir -p /var/www/danbooru2/shared/data/sample
 chown -R danbooru:danbooru /var/www/danbooru2
 sudo -u danbooru bash -l -c 'cp ~/danbooru/script/install/database.yml.templ /var/www/danbooru2/shared/config/database.yml'
 sudo -u danbooru bash -l -c 'cp ~/danbooru/script/install/danbooru_local_config.rb.templ /var/www/danbooru2/shared/config/danbooru_local_config.rb'