diff --git a/bin/pubber b/bin/pubber
index fe60426ab2..39eaf74437 100755
--- a/bin/pubber
+++ b/bin/pubber
@@ -37,8 +37,7 @@ else
         fi
         printf -v options_json '%s"%s":%s,' "$options_json" "$k" "$v"
     done
-    # Remove trailing comma and embed options in an object
-    options_json="{${options_json%?}}" 
+    options_json="{${options_json%,}}" 
 
     cloud_region=`jq -r .cloud_region $site_path/cloud_iot_config.json`