diff --git a/spec/support/database_cleaner.rb b/spec/support/database_cleaner.rb
index df9e8ae59..67bd8fda1 100644
--- a/spec/support/database_cleaner.rb
+++ b/spec/support/database_cleaner.rb
@@ -6,7 +6,7 @@
 RSpec.configure do |config|
   # Clean the registrations and users databases before running tests
   config.before(:suite) do
-    DatabaseCleaner[:mongoid].strategy = :deletion
+    DatabaseCleaner[:mongoid].strategy = [:deletion]
     DatabaseCleaner[:mongoid, { db: :users }].strategy = :deletion
 
     DatabaseCleaner.clean