diff --git a/plugins/login-o365/LoginOAuth2.js b/plugins/login-o365/LoginOAuth2.js
index 42e7ab4fc..4afc930bf 100644
--- a/plugins/login-o365/LoginOAuth2.js
+++ b/plugins/login-o365/LoginOAuth2.js
@@ -5,7 +5,7 @@
 			document.location = 'https://login.microsoftonline.com/'+tenant+'/oauth2/v2.0/authorize?' + (new URLSearchParams({
 				response_type: 'code',
 				client_id: client_id,
-				redirect_uri: document.location.href + '?LoginO365',
+				redirect_uri: document.location.href.replace(/\/$/, '') + '/LoginO365',
 				scope: [
 					// Associate personal info
 					'openid',