diff --git a/sdk/zksync.js/package.json b/sdk/zksync.js/package.json
index 1dc19fd5dc..80284fa81c 100644
--- a/sdk/zksync.js/package.json
+++ b/sdk/zksync.js/package.json
@@ -1,6 +1,6 @@
 {
     "name": "zksync",
-    "version": "0.12.0-alpha.5",
+    "version": "0.12.0-alpha.6",
     "license": "MIT",
     "main": "build/index.js",
     "types": "build/index.d.ts",
diff --git a/sdk/zksync.js/src/remote-wallet.ts b/sdk/zksync.js/src/remote-wallet.ts
index d43f42210c..61df70e5fc 100644
--- a/sdk/zksync.js/src/remote-wallet.ts
+++ b/sdk/zksync.js/src/remote-wallet.ts
@@ -463,7 +463,7 @@ export class RemoteWallet extends AbstractWallet {
         try {
             const preparedOrder = this.prepareTxsBeforeSending([order]);
             // For now, we assume that the same method will be used for both signing transactions and orders.
-            const signedOrder: any = (await this.web3Provider.send('zkSync_signBatch', preparedOrder))[0];
+            const signedOrder: any = (await this.web3Provider.send('zkSync_signBatch', [preparedOrder]))[0];
 
             // Sanity check
             if (!signedOrder['signature']) {