diff --git a/server/auth/modules/passport-providers/oidc.js b/server/auth/modules/passport-providers/oidc.js
index f9cfd88..03da065 100644
--- a/server/auth/modules/passport-providers/oidc.js
+++ b/server/auth/modules/passport-providers/oidc.js
@@ -55,7 +55,7 @@ class PassportOpenIDConnect {
                 try {
                     const received_user = {
                         auth_id: profile.id,
-                        email: profile.emails[0].value,
+                        email: profile.emails[0].value.toLowerCase(),
                         name: profile.displayName,
                         roles: []
                     };