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-rw-r--r--src/ts/0x.js.ts3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/ts/0x.js.ts b/src/ts/0x.js.ts
index 4b9680a18..1cc2d8b44 100644
--- a/src/ts/0x.js.ts
+++ b/src/ts/0x.js.ts
@@ -1,6 +1,7 @@
import * as BigNumber from 'bignumber.js';
import * as ethUtil from 'ethereumjs-util';
import {assert} from './utils/assert';
+import {ECSignatureSchema} from './schemas/ec_signature_schema';
/**
* Elliptic Curve signature
@@ -20,7 +21,7 @@ export class ZeroEx {
*/
public static isValidSignature(data: string, signature: ECSignature, signer: ETHAddressHex): boolean {
assert.isString('data', data);
- assert.isObject('signature', signature);
+ assert.doesConformToSchema('signature', signature, ECSignatureSchema);
assert.isETHAddressHex('signer', signer);
const dataBuff = ethUtil.toBuffer(data);