diff --git a/classes/tests/test_file_system.php b/classes/tests/test_file_system.php
index 2a938035..5b51d8f7 100644
--- a/classes/tests/test_file_system.php
+++ b/classes/tests/test_file_system.php
@@ -65,7 +65,7 @@ protected function initialise_external_client($config) {
             manager::set_objectfs_config($config);
             $client = new test_azure_integration_client($config);
         } else if (isset($CFG->phpunit_objectfs_azure_blob_storage_integration_test_credentials)) {
-            $credentials = $CFG->phpunit_objectfs_azure_integration_test_credentials;
+            $credentials = $CFG->phpunit_objectfs_azure_blob_storage_integration_test_credentials;
             $config->azure_accountname = $credentials['azure_accountname'];
             $config->azure_container = $credentials['azure_container'];
             $config->azure_sastoken = $credentials['azure_sastoken'];