1 files changed, 4 insertions, 3 deletions
diff --git a/packages/base-contract/src/index.ts b/packages/base-contract/src/index.ts
index a8e4ad2e2..fbb8478b7 100644
--- a/packages/base-contract/src/index.ts
+++ b/packages/base-contract/src/index.ts
@@ -1,5 +1,5 @@
-import { abiUtils, BigNumber } from '@0xproject/utils';
-import { Web3Wrapper } from '@0xproject/web3-wrapper';
+import { abiUtils, BigNumber } from '@0x/utils';
+import { Web3Wrapper } from '@0x/web3-wrapper';
 import {
     AbiDefinition,
     AbiType,
@@ -129,7 +129,8 @@ export class BaseContract {
             if (abiDefinition.type !== AbiType.Function) {
                 return false;
             }
-            const abiFunctionSignature = abiUtils.getFunctionSignature(abiDefinition);
+            // tslint:disable-next-line:no-unnecessary-type-assertion
+            const abiFunctionSignature = abiUtils.getFunctionSignature(abiDefinition as MethodAbi);
             if (abiFunctionSignature === functionSignature) {
                 return true;
             }