diff --git a/lib/tasks/brakeman.rake b/lib/tasks/brakeman.rake
index 3a225801ff21d884aa97ac5f1383d59e734de7ba..52a9b017e792e0028582312858878b59cf54c403 100644
--- a/lib/tasks/brakeman.rake
+++ b/lib/tasks/brakeman.rake
@@ -1,6 +1,6 @@
 desc 'Security check via brakeman'
 task :brakeman do
-  if system("brakeman --skip-files lib/backup/repository.rb -w3 -z")
+  if system(*%W(brakeman --skip-files lib/backup/repository.rb -w3 -z))
     puts 'Security check succeed'
   else
     puts 'Security check failed'