diff --git a/config/initializers/prometheus.rb b/config/initializers/prometheus.rb
index 97d57ab0..2e2ce06c 100644
--- a/config/initializers/prometheus.rb
+++ b/config/initializers/prometheus.rb
@@ -8,7 +8,7 @@
 
 PrometheusExporter::Client.default = PrometheusExporter::Client.new(host: ENV.fetch('PROMETHEUS_EXPORTER'), port: 9091)
 
-if Rails.env.production? && !EnvConfig.REGISTRATION_LIVE_SITE
+if Rails.env.production? && !EnvConfig.REGISTRATION_LIVE_SITE?
   PrometheusExporter::Instrumentation::Process.start(type: 'wca-registration-handler-staging', labels: { process: '1' })
   suffix = '-staging'
 else