1 files changed, 3 insertions, 2 deletions
diff --git a/src/contract_wrappers/exchange_wrapper.ts b/src/contract_wrappers/exchange_wrapper.ts
index 8dc048648..a021d0e14 100644
--- a/src/contract_wrappers/exchange_wrapper.ts
+++ b/src/contract_wrappers/exchange_wrapper.ts
@@ -833,9 +833,10 @@ export class ExchangeWrapper extends ContractWrapper {
     private _getExchangeArtifactsByAddressOrThrow(exchangeContractAddress: string): ContractArtifact {
         const exchangeArtifacts = _.values<ContractArtifact>(ExchangeArtifactsByName);
         for (const exchangeArtifact of exchangeArtifacts) {
+            const networkSpecificExchangeArtifactValues = _.values(exchangeArtifact.networks);
             const exchangeAddressesInArtifact = _.map(
-                _.values(exchangeArtifact.networks),
-                artifactsByNetwork => artifactsByNetwork.address,
+                networkSpecificExchangeArtifactValues,
+                networkSpecificExchangeArtifact => networkSpecificExchangeArtifact.address,
             );
             if (_.includes(exchangeAddressesInArtifact, exchangeContractAddress)) {
                 return exchangeArtifact;