diff --git a/config/initializers/prometheus.rb b/config/initializers/prometheus.rb
index 1a2f38e0..73650a96 100644
--- a/config/initializers/prometheus.rb
+++ b/config/initializers/prometheus.rb
@@ -1,6 +1,6 @@
 # frozen_string_literal: true
 
-if !Rails.env.test? && DawarichSettings.prometheus_exporter_enabled?
+if defined?(Rails::Server) && !Rails.env.test? && DawarichSettings.prometheus_exporter_enabled?
   require 'prometheus_exporter/middleware'
   require 'prometheus_exporter/instrumentation'