diff --git a/lib/backup/repository.rb b/lib/backup/repository.rb
index 4e99d4bbe5c..380beac708d 100644
--- a/lib/backup/repository.rb
+++ b/lib/backup/repository.rb
@@ -30,7 +30,7 @@ module Backup
 
         if File.exists?(path_to_repo(wiki))
           print " * #{wiki.path_with_namespace} ... "
-          if wiki.empty?
+          if wiki.repository.empty?
             puts " [SKIPPED]".cyan
           else
             output, status = Gitlab::Popen.popen(%W(git --git-dir=#{path_to_repo(wiki)} bundle create #{path_to_bundle(wiki)} --all))