diff --git a/.github/workflows/smb-kerberos.yml b/.github/workflows/smb-kerberos.yml
index c10d4f59d2940..51e5fe30c104c 100644
--- a/.github/workflows/smb-kerberos.yml
+++ b/.github/workflows/smb-kerberos.yml
@@ -30,7 +30,7 @@ jobs:
         with:
           repository: nextcloud/user_saml
           path: apps/user_saml
-          ref: stable27
+          ref: stable-5.2
       - name: Pull images
         run: |
           docker pull ghcr.io/icewind1991/samba-krb-test-dc
diff --git a/apps/files_external/tests/sso-setup/test-sso-smb.sh b/apps/files_external/tests/sso-setup/test-sso-smb.sh
index b0f0a2c7af92f..df0692f4319ae 100755
--- a/apps/files_external/tests/sso-setup/test-sso-smb.sh
+++ b/apps/files_external/tests/sso-setup/test-sso-smb.sh
@@ -5,8 +5,9 @@ DC_IP="$1"
 SCRIPT_DIR="${0%/*}"
 
 echo -n "Checking that we can authenticate using kerberos: "
-LOGIN_CONTENT=$("$SCRIPT_DIR/client-cmd.sh" $DC_IP curl -i -s --negotiate -u testuser@DOMAIN.TEST: --delegation always http://httpd.domain.test/index.php/apps/user_saml/saml/login?originalUrl=success)
-if [[ "$LOGIN_CONTENT" =~ "Location: success" ]]; then
+LOGIN_CONTENT=$("$SCRIPT_DIR/client-cmd.sh" $DC_IP curl -i -s --negotiate -u testuser@DOMAIN.TEST: --delegation always http://httpd.domain.test/index.php/apps/user_saml/saml/login?originalUrl=http://localhost/success)
+
+if [[ "$LOGIN_CONTENT" =~ "Location: http://localhost/success" ]]; then
   echo "✔️"
 else
   echo "❌"