diff options
| -rw-r--r-- | packages/0x.js/src/contract_wrappers/contract_wrapper.ts | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/packages/0x.js/src/contract_wrappers/contract_wrapper.ts b/packages/0x.js/src/contract_wrappers/contract_wrapper.ts index bd65c8eb3..7997b1647 100644 --- a/packages/0x.js/src/contract_wrappers/contract_wrapper.ts +++ b/packages/0x.js/src/contract_wrappers/contract_wrapper.ts @@ -52,7 +52,8 @@ export class ContractWrapper { throw new Error(ZeroExError.SubscriptionNotFound); } if (!_.isUndefined(err)) { - this._filterCallbacks[filterToken](err, undefined); + const callback = this._filterCallbacks[filterToken]; + callback(err, undefined); } delete this._filters[filterToken]; delete this._filterCallbacks[filterToken]; |