diff --git a/contracts/asset-proxy/contracts/src/bridges/ChaiBridge.sol b/contracts/asset-proxy/contracts/src/bridges/ChaiBridge.sol
index 5175924755..9ff2908aff 100644
--- a/contracts/asset-proxy/contracts/src/bridges/ChaiBridge.sol
+++ b/contracts/asset-proxy/contracts/src/bridges/ChaiBridge.sol
@@ -70,16 +70,6 @@ contract ChaiBridge is
         // This will never fail if the `draw` call was successful
         IERC20Token(_getDaiAddress()).transfer(to, amount);
 
-        emit ERC20BridgeTransfer(
-            address(this),
-            _getChaiAddress(),
-            _getDaiAddress(),
-            // draw() can change the rate so this is tricky to compute.
-            0,
-            amount,
-            from,
-            to
-        );
         return BRIDGE_SUCCESS;
     }
 }
diff --git a/contracts/asset-proxy/contracts/src/bridges/CurveBridge.sol b/contracts/asset-proxy/contracts/src/bridges/CurveBridge.sol
index 1044dffc7a..074627d5b8 100644
--- a/contracts/asset-proxy/contracts/src/bridges/CurveBridge.sol
+++ b/contracts/asset-proxy/contracts/src/bridges/CurveBridge.sol
@@ -99,7 +99,6 @@ contract CurveBridge is
         LibERC20Token.transfer(toTokenAddress, to, toTokenBalance);
 
         emit ERC20BridgeTransfer(
-            address(this),
             fromTokenAddress,
             toTokenAddress,
             fromTokenBalance,
diff --git a/contracts/asset-proxy/contracts/src/bridges/DydxBridge.sol b/contracts/asset-proxy/contracts/src/bridges/DydxBridge.sol
index bec19c1f11..67baa1c14c 100644
--- a/contracts/asset-proxy/contracts/src/bridges/DydxBridge.sol
+++ b/contracts/asset-proxy/contracts/src/bridges/DydxBridge.sol
@@ -44,14 +44,13 @@ contract DydxBridge is
     ///         5. Withdrawals from dydx are made to the `to` address.
     ///         6. Calling this function must always withdraw at least `amount`,
     ///            otherwise the `ERC20Bridge` will revert.
-    /// @param toTokenAddress The token to be withdrawn.
     /// @param from The sender of the tokens and owner of the dydx account.
     /// @param to The recipient of the tokens.
     /// @param amount Minimum amount of `toTokenAddress` tokens to deposit or withdraw.
     /// @param encodedBridgeData An abi-encoded `BridgeData` struct.
     /// @return success The magic bytes if successful.
     function bridgeTransferFrom(
-        address toTokenAddress,
+        address, /* toTokenAddress */
         address from,
         address to,
         uint256 amount,
@@ -83,17 +82,6 @@ contract DydxBridge is
         // Run operation. This will revert on failure.
         IDydx(_getDydxAddress()).operate(accounts, actions);
 
-        emit ERC20BridgeTransfer(
-            address(this),
-            // The from token isn't necessarily clear since we can have zero
-            // or more deposits.
-            address(0),
-            toTokenAddress,
-            0,
-            amount,
-            from,
-            to
-        );
         return BRIDGE_SUCCESS;
     }
 
diff --git a/contracts/asset-proxy/contracts/src/bridges/Eth2DaiBridge.sol b/contracts/asset-proxy/contracts/src/bridges/Eth2DaiBridge.sol
index 0bbe784461..6b3b18d1c8 100644
--- a/contracts/asset-proxy/contracts/src/bridges/Eth2DaiBridge.sol
+++ b/contracts/asset-proxy/contracts/src/bridges/Eth2DaiBridge.sol
@@ -72,7 +72,6 @@ contract Eth2DaiBridge is
         LibERC20Token.transfer(toTokenAddress, to, boughtAmount);
 
         emit ERC20BridgeTransfer(
-            address(this),
             fromTokenAddress,
             toTokenAddress,
             fromTokenBalance,
diff --git a/contracts/asset-proxy/contracts/src/bridges/KyberBridge.sol b/contracts/asset-proxy/contracts/src/bridges/KyberBridge.sol
index 3e9557d941..91cd9c547a 100644
--- a/contracts/asset-proxy/contracts/src/bridges/KyberBridge.sol
+++ b/contracts/asset-proxy/contracts/src/bridges/KyberBridge.sol
@@ -150,7 +150,6 @@ contract KyberBridge is
         }
 
         emit ERC20BridgeTransfer(
-            address(this),
             state.fromTokenAddress == KYBER_ETH_ADDRESS ? address(state.weth) : state.fromTokenAddress,
             toTokenAddress,
             state.fromTokenBalance,
diff --git a/contracts/asset-proxy/contracts/src/bridges/UniswapBridge.sol b/contracts/asset-proxy/contracts/src/bridges/UniswapBridge.sol
index 35155555d5..4ea7ac2d3a 100644
--- a/contracts/asset-proxy/contracts/src/bridges/UniswapBridge.sol
+++ b/contracts/asset-proxy/contracts/src/bridges/UniswapBridge.sol
@@ -148,7 +148,6 @@ contract UniswapBridge is
         }
 
         emit ERC20BridgeTransfer(
-            address(this),
             fromTokenAddress,
             toTokenAddress,
             state.fromTokenBalance,
diff --git a/contracts/asset-proxy/contracts/src/interfaces/IERC20Bridge.sol b/contracts/asset-proxy/contracts/src/interfaces/IERC20Bridge.sol
index 76b4750af3..3f053ac9c4 100644
--- a/contracts/asset-proxy/contracts/src/interfaces/IERC20Bridge.sol
+++ b/contracts/asset-proxy/contracts/src/interfaces/IERC20Bridge.sol
@@ -22,7 +22,6 @@ pragma solidity ^0.5.9;
 contract IERC20Bridge {
 
     /// @dev Emitted when a bridge transfer is completed.
-    /// @param bridge The bridge address.
     /// @param fromToken The address of the "from" token.
     /// @param toToken The address of the "to" token.
     /// @param fromTokenAmount The "from" token amount consumed.
@@ -30,7 +29,6 @@ contract IERC20Bridge {
     /// @param from Supplier of "fromToken".
     /// @param to Receiver of "toToken".
     event ERC20BridgeTransfer(
-        address indexed bridge,
         address fromToken,
         address toToken,
         uint256 fromTokenAmount,