diff --git a/packages/connect/src/backend/Blockchain.ts b/packages/connect/src/backend/Blockchain.ts
index 348313dc77b9..b3fe864bfb28 100644
--- a/packages/connect/src/backend/Blockchain.ts
+++ b/packages/connect/src/backend/Blockchain.ts
@@ -40,10 +40,6 @@ const getNormalizedTrezorShortcut = (shortcut: string) => {
         return 'XRP';
     }
 
-    if (['OP', 'BASE'].includes(shortcut)) {
-        return 'ETH';
-    }
-
     return shortcut;
 };
 
@@ -132,18 +128,10 @@ export class Blockchain {
 
         this.serverInfo = info;
 
-        const trezorShortcut = getNormalizedTrezorShortcut(this.coinInfo.shortcut);
-
-        // TODO: remove of change
-        // const backendShortcut = this.serverInfo.shortcut;
-        // if (trezorShortcut.toLowerCase() !== backendShortcut.toLowerCase()) {
+        const trezorNetworkShortcut = getNormalizedTrezorShortcut(this.coinInfo.shortcut);
+        const backendNetworkShortcut = this.serverInfo.network;
 
-        if (
-            (this.coinInfo.type === 'ethereum' &&
-                info.network.toLowerCase() !== this.coinInfo.chain?.toLowerCase()) ||
-            (this.coinInfo.type !== 'ethereum' &&
-                info.network.toLowerCase() !== trezorShortcut.toLowerCase())
-        ) {
+        if (backendNetworkShortcut.toLowerCase() !== trezorNetworkShortcut.toLowerCase()) {
             throw ERRORS.TypedError('Backend_Invalid');
         }