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-rw-r--r--packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol11
1 files changed, 6 insertions, 5 deletions
diff --git a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol
index 14f191879..54487f726 100644
--- a/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol
+++ b/packages/contracts/src/2.0.0/extensions/Forwarder/MixinForwarderCore.sol
@@ -39,7 +39,6 @@ contract MixinForwarderCore is
MExchangeWrapper,
IForwarderCore
{
-
using LibBytes for bytes;
/// @dev Constructor approves ERC20 proxy to transfer ZRX and WETH on this contract's behalf.
@@ -47,10 +46,12 @@ contract MixinForwarderCore is
public
{
address proxyAddress = EXCHANGE.getAssetProxy(ERC20_DATA_ID);
- if (proxyAddress != address(0)) {
- ETHER_TOKEN.approve(proxyAddress, MAX_UINT);
- ZRX_TOKEN.approve(proxyAddress, MAX_UINT);
- }
+ require(
+ proxyAddress != address(0),
+ "UNREGISTERED_ASSET_PROXY"
+ );
+ ETHER_TOKEN.approve(proxyAddress, MAX_UINT);
+ ZRX_TOKEN.approve(proxyAddress, MAX_UINT);
}
/// @dev Purchases as much of orders' makerAssets as possible by selling up to 95% of transaction's ETH value.