diff --git a/packages/apps-config/src/endpoints/testing.ts b/packages/apps-config/src/endpoints/testing.ts
index adaa8b05c4..3820afec11 100644
--- a/packages/apps-config/src/endpoints/testing.ts
+++ b/packages/apps-config/src/endpoints/testing.ts
@@ -133,6 +133,7 @@ export function createTesting (t: TFunction, firstOnly: boolean, withSort: boole
     },
     {
       info: 'dolphin',
+      isDisabled: true, // https://github.com/polkadot-js/apps/issues/7439
       text: t('rpc.dolphin', 'Dolphin Testnet', { ns: 'apps-config' }),
       providers: {
         'Dolphin Testnet': 'wss://trillian.dolphin.red'