2 files changed, 2 insertions, 2 deletions
diff --git a/src/contract_wrappers/contract_wrapper.ts b/src/contract_wrappers/contract_wrapper.ts
index 1cce1b235..7efa229a5 100644
--- a/src/contract_wrappers/contract_wrapper.ts
+++ b/src/contract_wrappers/contract_wrapper.ts
@@ -22,7 +22,7 @@ export class ContractWrapper {
         if (!_.isUndefined(address)) {
             contractAddress = address;
         } else if (!_.isUndefined(artifactNetworkConfigs)) {
-            contractAddress = artifactNetworkConfigs.address;
+            contractAddress = artifactNetworkConfigs.address.toLowerCase();
         }
 
         if (!_.isUndefined(contractAddress)) {
diff --git a/src/contract_wrappers/token_wrapper.ts b/src/contract_wrappers/token_wrapper.ts
index ae1c7fa43..8c1bf6b52 100644
--- a/src/contract_wrappers/token_wrapper.ts
+++ b/src/contract_wrappers/token_wrapper.ts
@@ -252,7 +252,7 @@ export class TokenWrapper extends ContractWrapper {
         if (_.isUndefined(proxyNetworkConfigsIfExists)) {
             throw new Error(ZeroExError.ContractNotDeployedOnNetwork);
         }
-        const proxyAddress = proxyNetworkConfigsIfExists.address;
+        const proxyAddress = proxyNetworkConfigsIfExists.address.toLowerCase();
         return proxyAddress;
     }
 }