diff --git a/app/lib/server/functions/processWebhookMessage.js b/app/lib/server/functions/processWebhookMessage.js
index 18bbd4e76aa..3fcfa34b866 100644
--- a/app/lib/server/functions/processWebhookMessage.js
+++ b/app/lib/server/functions/processWebhookMessage.js
@@ -61,7 +61,7 @@ export const processWebhookMessage = function(messageObj, user, defaultValues =
 			parseUrls: messageObj.parseUrls !== undefined ? messageObj.parseUrls : !messageObj.attachments,
 			bot: messageObj.bot,
 			groupable: messageObj.groupable !== undefined ? messageObj.groupable : false,
-			tmid: messageObj.tmid !== undefined ? messageObj.tmid : '',
+			tmid: messageObj.tmid,
 		};
 
 		if (!_.isEmpty(messageObj.icon_url) || !_.isEmpty(messageObj.avatar)) {