diff --git a/front_end/entrypoints/main/MainImpl.ts b/front_end/entrypoints/main/MainImpl.ts
index 761e6fdf2c..ec725fa369 100644
--- a/front_end/entrypoints/main/MainImpl.ts
+++ b/front_end/entrypoints/main/MainImpl.ts
@@ -433,6 +433,7 @@ export class MainImpl {
       Root.Runtime.ExperimentName.OUTERMOST_TARGET_SELECTOR,
       Root.Runtime.ExperimentName.SELF_XSS_WARNING,
       Root.Runtime.ExperimentName.PRELOADING_STATUS_PANEL,
+      ...(Root.Runtime.Runtime.queryParam('isChromeForTesting') ? ['protocolMonitor'] : []),
     ]);
 
     Root.Runtime.experiments.setNonConfigurableExperiments([