diff --git a/Email-OAuth-App-Setup.md b/Email-OAuth-App-Setup.md
index 9116bd6..e84ebfc 100644
--- a/Email-OAuth-App-Setup.md
+++ b/Email-OAuth-App-Setup.md
@@ -27,7 +27,7 @@ See https://learn.microsoft.com/en-us/entra/identity-platform/quickstart-registe
 2. Choose the account type (single tenant vs multi-tenant).
    For personal M365 accounts use the option `Accounts in any organizational directory (Any Microsoft Entra ID tenant - Multitenant) and personal Microsoft accounts (e.g. Skype, Xbox)`.
 
-3. Set redirect URI. https://example.domain/api/oauth/callback
+3. Set redirect URI. https://example.domain/api/oauth/callback/
 
 4. Navigate to the Authentication tab. Set "Implicit grant and hybrid flows" to allow both access and id tokens,