diff --git a/app/lib/utils.js b/app/lib/utils.js
index 8f14bd4c5..56e8a0a6c 100644
--- a/app/lib/utils.js
+++ b/app/lib/utils.js
@@ -1,3 +1,3 @@
 export const formatAttachmentUrl = (attachmentUrl, userId, token, server) => (
-	encodeURI(attachmentUrl.includes('http') ? attachmentUrl : `${ server }${ attachmentUrl }?rc_uid=${ userId }&rc_token=${ token }`)
+	encodeURI(attachmentUrl.startsWith('http') ? attachmentUrl : `${ server }${ attachmentUrl }?rc_uid=${ userId }&rc_token=${ token }`)
 );