diff --git a/xmlout.js b/xmlout.js
index e3df449..9d65c4e 100644
--- a/xmlout.js
+++ b/xmlout.js
@@ -146,7 +146,7 @@ function prefixMessageWithSN(data) {
             return 'SN=' + data['SN'].trim() + '; ' + data['MESSAGE'];
         }
         else if (config.h2h_out.parse_sn == 'YES') {
-            return = 'SN=' + parseSN(data['MESSAGE']) + '; ' + data['MESSAGE'];
+            return 'SN=' + parseSN(data['MESSAGE']) + '; ' + data['MESSAGE'];
         }
     }