diff --git a/lib/zammad/application/initializer/db_preflight_check.rb b/lib/zammad/application/initializer/db_preflight_check.rb
index 4e550623c..da7446ac6 100644
--- a/lib/zammad/application/initializer/db_preflight_check.rb
+++ b/lib/zammad/application/initializer/db_preflight_check.rb
@@ -1,6 +1,7 @@
 require 'zammad/application/initializer/db_preflight_check/base'
 require 'zammad/application/initializer/db_preflight_check/mysql2'
 require 'zammad/application/initializer/db_preflight_check/postgresql'
+require 'zammad/application/initializer/db_preflight_check/nulldb'
 
 module Zammad
   class Application
diff --git a/lib/zammad/application/initializer/db_preflight_check/nulldb.rb b/lib/zammad/application/initializer/db_preflight_check/nulldb.rb
new file mode 100644
index 000000000..909e5dc29
--- /dev/null
+++ b/lib/zammad/application/initializer/db_preflight_check/nulldb.rb
@@ -0,0 +1,12 @@
+module Zammad
+  class Application
+    class Initializer
+      module DBPreflightCheck
+        module Nulldb
+          # no-op
+          def self.perform; end
+        end
+      end
+    end
+  end
+end