diff --git a/src/mail.js b/src/mail.js
index 0df3ea485..1d144fd0b 100644
--- a/src/mail.js
+++ b/src/mail.js
@@ -516,7 +516,7 @@ async function checkRblStatus(domain) {
         blacklistedServers.push(result);
     }
 
-    debug(`checkRblStatus: ${domain} (ip: ${ip}) servers: ${JSON.stringify(blacklistedServers)})`);
+    debug(`checkRblStatus: ${domain} (ip: ${ip}) blacklistedServers: ${JSON.stringify(blacklistedServers)})`);
 
     return { status: blacklistedServers.length === 0, ip, servers: blacklistedServers };
 }