diff --git a/packages/ui-settings/src/defaults.ts b/packages/ui-settings/src/defaults.ts
index 505e99b0..8bf41537 100644
--- a/packages/ui-settings/src/defaults.ts
+++ b/packages/ui-settings/src/defaults.ts
@@ -47,8 +47,8 @@ const UIMODES: Options = [
 ];
 
 const UITHEMES: Options = [
-  { value: 'substrate', text: 'Substrate' },
-  { value: 'polkadot', text: 'Polkadot' }
+  { value: 'polkadot', text: 'Polkadot' },
+  { value: 'substrate', text: 'Substrate' }
 ];
 
 export {