diff --git a/packages/cosmwasm-stargate/src/queries/wasm.spec.ts b/packages/cosmwasm-stargate/src/queries/wasm.spec.ts
index 829d9cae..8adcbb88 100644
--- a/packages/cosmwasm-stargate/src/queries/wasm.spec.ts
+++ b/packages/cosmwasm-stargate/src/queries/wasm.spec.ts
@@ -421,9 +421,11 @@ describe("WasmExtension", () => {
         assertDefined(result.data);
         const msgData = fromOneElementArray(result.data);
         expect(msgData.msgType).toEqual("instantiate");
-        expect(MsgInstantiateContractResponse.decode(msgData.data)).toEqual(
-          MsgInstantiateContractResponse.fromPartial({ address: contractAddress }),
-        );
+        const response = MsgInstantiateContractResponse.decode(msgData.data);
+        expect({
+          ...response,
+          data: new Uint8Array(), // workaround for https://github.com/stephenh/ts-proto/issues/237
+        }).toEqual(MsgInstantiateContractResponse.fromPartial({ address: contractAddress }));
 
         const balanceUcosm = await client.bank.balance(contractAddress, "ucosm");
         expect(balanceUcosm).toEqual(transferAmount[0]);