diff --git a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol b/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol
index 821d30279c..4a59b6c0f2 100644
--- a/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol
+++ b/packages/contracts/src/2.0.0/protocol/Exchange/MixinTransactions.sol
@@ -155,7 +155,8 @@ contract MixinTransactions is
         view
         returns (address)
     {
-        address contextAddress = currentContextAddress == address(0) ? msg.sender : currentContextAddress;
+        address currentContextAddress_ = currentContextAddress;
+        address contextAddress = currentContextAddress_ == address(0) ? msg.sender : currentContextAddress_;
         return contextAddress;
     }
 }