diff --git a/lib/plugins/influxdb/send-annotation.js b/lib/plugins/influxdb/send-annotation.js
index a7191201a..df15b0a09 100644
--- a/lib/plugins/influxdb/send-annotation.js
+++ b/lib/plugins/influxdb/send-annotation.js
@@ -40,7 +40,7 @@ module.exports = {
     if (options.influxdb.tags) {
       for (var row of options.influxdb.tags.split(',')) {
         const keyAndValue = row.split('=');
-        tags += `,${keyAndValue[1]}`;
+        tags.push(keyAndValue[1]);
       }
     }
     const influxDBTags = annotationsHelper.getTagsAsString(tags);