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-rw-r--r--src/contract_wrappers/exchange_wrapper.ts2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index 659eff81c..a617d8003 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -563,7 +563,7 @@ export class ExchangeWrapper extends ContractWrapper {
}
private _wrapEventAsZeroExEvent(event: ContractEventObj): ZeroExEvent {
const zeroExEvent = {
- watch: event.watch,
+ watch: event.watch.bind(event),
stopWatchingAsync: async () => {
await promisify(event.stopWatching, event)();
},