diff --git a/src/stellar-plus/core/contract-engine/errors.ts b/src/stellar-plus/core/contract-engine/errors.ts
index c2ea4dd..5e5300d 100644
--- a/src/stellar-plus/core/contract-engine/errors.ts
+++ b/src/stellar-plus/core/contract-engine/errors.ts
@@ -158,7 +158,6 @@ export const CEError = {
   contractInstanceMissingLiveUntilLedgerSeq,
   contractCodeNotFound,
   contractCodeMissingLiveUntilLedgerSeq,
-  contractEngineClassFailedToInitialize,
   failedToUploadWasm,
   failedToDeployContract,
   failedToWrapAsset,
diff --git a/src/stellar-plus/core/contract-engine/index.unit.test.ts b/src/stellar-plus/core/contract-engine/index.unit.test.ts
index b3f8126..110af93 100644
--- a/src/stellar-plus/core/contract-engine/index.unit.test.ts
+++ b/src/stellar-plus/core/contract-engine/index.unit.test.ts
@@ -641,7 +641,7 @@ describe('ContractEngine', () => {
     it('should read from a contract', async () => {
       MOCKED_SOROBAN_TRANSACTION_PIPELINE.mockImplementation(() => {
         return {
-          execute: jest.fn().mockResolvedValue({ output: { value: true } }),
+          execute: jest.fn().mockResolvedValue(true),
         }
       })