diff --git a/functions/fw_builder.pp b/functions/fw_builder.pp
index d241e94bddf4a9b552c705c396b52cc2eb575743..81ddf574d82c42b71f9f353ba4f79b71b1e608ba 100644
--- a/functions/fw_builder.pp
+++ b/functions/fw_builder.pp
@@ -133,8 +133,8 @@ function fw_builder::fw_builder() {
   #
   ['public', 'trust'].each() |$zone| {
     if $zone in $fw_conf and empty($fw_conf[$zone]) {
-      echo { 'WARNING fw_builder':
-        message => "'${zone}' zone key is defined but it\'s empty";
+      echo { "WARNING FW Builder zone ${zone}":
+        message => "key '${zone}' is defined but it\'s empty";
       }
     }
   }