diff --git a/src/testing/services/behat-runtime.ts b/src/testing/services/behat-runtime.ts
index 554ae6a7d..369683109 100644
--- a/src/testing/services/behat-runtime.ts
+++ b/src/testing/services/behat-runtime.ts
@@ -75,7 +75,7 @@ export class TestingBehatRuntime {
         if (options.configOverrides) {
             // Set the cookie so it's maintained between reloads.
             document.cookie = 'MoodleAppConfig=' + JSON.stringify(options.configOverrides);
-            CoreConfig.patchEnvironment(options.configOverrides);
+            CoreConfig.patchEnvironment(options.configOverrides, { patchDefault: true });
         }
     }