diff --git a/lib/cfn-nag/custom_rules/SPCMRule.rb b/lib/cfn-nag/custom_rules/SPCMRule.rb
index 5717443c..28060a3e 100644
--- a/lib/cfn-nag/custom_rules/SPCMRule.rb
+++ b/lib/cfn-nag/custom_rules/SPCMRule.rb
@@ -26,7 +26,7 @@ def audit_impl(cfn_model)
     begin
       policy_documents = SPCM.new.metric_impl(cfn_model)
     rescue StandardError => catch_all_exception
-      puts "Experimental SPCM rule is failing. Please report #{catch_all_exception} with the violating template"
+      $stderr.puts "Experimental SPCM rule is failing. Please report #{catch_all_exception} with the violating template"
       policy_documents = {
         'AWS::IAM::Policy' => {},
         'AWS::IAM::Role' => {}