diff --git a/packages/extension-ui/src/Popup/Signing/Request.tsx b/packages/extension-ui/src/Popup/Signing/Request.tsx
index fac8ba87..5201ae5d 100644
--- a/packages/extension-ui/src/Popup/Signing/Request.tsx
+++ b/packages/extension-ui/src/Popup/Signing/Request.tsx
@@ -7,7 +7,7 @@ import { AccountJson, RequestSign } from '@polkadot/extension/background/types';
 import { SignerPayloadJSON, SignerPayloadRaw } from '@polkadot/types/types';
 
 import React, { useContext, useState, useEffect } from 'react';
-import { TypeRegistry, createType } from '@polkadot/types';
+import { TypeRegistry } from '@polkadot/types';
 
 import { ActionBar, ActionContext, Address, ButtonArea, Link, VerticalSpace } from '../../components';
 import { approveSignPassword, approveSignSignature, cancelSignRequest } from '../../messaging';
@@ -40,7 +40,7 @@ export default function Request ({ account: { isExternal }, request, signId, url
       setHexBytes((inner as SignerPayloadRaw).data);
       setExtrinsic(null);
     } else {
-      setExtrinsic(createType(registry, 'ExtrinsicPayload', inner, { version: (inner as SignerPayloadJSON).version }));
+      setExtrinsic(registry.createType('ExtrinsicPayload', inner, { version: (inner as SignerPayloadJSON).version }));
       setHexBytes(null);
     }
   }, [request]);
diff --git a/packages/extension/src/background/RequestExtrinsicSign.ts b/packages/extension/src/background/RequestExtrinsicSign.ts
index 28b86ff8..a5d0aa6f 100644
--- a/packages/extension/src/background/RequestExtrinsicSign.ts
+++ b/packages/extension/src/background/RequestExtrinsicSign.ts
@@ -2,10 +2,11 @@
 // This software may be modified and distributed under the terms
 // of the Apache-2.0 license. See the LICENSE file for details.
 
-import { createType, TypeRegistry } from '@polkadot/types';
 import { KeyringPair } from '@polkadot/keyring/types';
-import { RequestSign } from './types';
 import { SignerPayloadJSON, SignerPayloadRaw } from '@polkadot/types/types';
+import { RequestSign } from './types';
+
+import { TypeRegistry } from '@polkadot/types';
 
 export default class RequestExtrinsicSign implements RequestSign {
   public readonly inner: SignerPayloadJSON | SignerPayloadRaw;
@@ -16,7 +17,7 @@ export default class RequestExtrinsicSign implements RequestSign {
 
   sign (registry: TypeRegistry, pair: KeyringPair): { signature: string } {
     const inner = this.inner as SignerPayloadJSON;
-    const extrinsic = createType(registry, 'ExtrinsicPayload', this.inner, { version: inner.version });
+    const extrinsic = registry.createType('ExtrinsicPayload', this.inner, { version: inner.version });
 
     return extrinsic.sign(pair);
   }