diff --git a/contracts/erc20-bridge-sampler/contracts/src/ApproximateBuys.sol b/contracts/erc20-bridge-sampler/contracts/src/ApproximateBuys.sol
index 7df6aef6c1..a6776b3457 100644
--- a/contracts/erc20-bridge-sampler/contracts/src/ApproximateBuys.sol
+++ b/contracts/erc20-bridge-sampler/contracts/src/ApproximateBuys.sol
@@ -20,7 +20,6 @@ pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
 import "@0x/contracts-exchange-libs/contracts/src/LibMath.sol";
-import "@0x/contracts-utils/contracts/src/LibBytes.sol";
 
 
 contract ApproximateBuys {
diff --git a/contracts/erc20-bridge-sampler/contracts/src/ERC20BridgeSampler.sol b/contracts/erc20-bridge-sampler/contracts/src/ERC20BridgeSampler.sol
index bd0577121e..7028238f61 100644
--- a/contracts/erc20-bridge-sampler/contracts/src/ERC20BridgeSampler.sol
+++ b/contracts/erc20-bridge-sampler/contracts/src/ERC20BridgeSampler.sol
@@ -19,7 +19,6 @@
 pragma solidity ^0.5.9;
 pragma experimental ABIEncoderV2;
 
-import "./ApproximateBuys.sol";
 import "./CurveSampler.sol";
 import "./Eth2DaiSampler.sol";
 import "./KyberSampler.sol";
diff --git a/contracts/erc20-bridge-sampler/contracts/src/UniswapSampler.sol b/contracts/erc20-bridge-sampler/contracts/src/UniswapSampler.sol
index 1a0167cc09..7137653daa 100644
--- a/contracts/erc20-bridge-sampler/contracts/src/UniswapSampler.sol
+++ b/contracts/erc20-bridge-sampler/contracts/src/UniswapSampler.sol
@@ -35,8 +35,6 @@ contract UniswapSampler is
 {
     /// @dev Gas limit for Uniswap calls.
     uint256 constant private UNISWAP_CALL_GAS = 150e3; // 150k
-    /// @dev Gas limit for UniswapV2 calls.
-    uint256 constant private UNISWAPV2_CALL_GAS = 150e3; // 150k
 
     /// @dev Sample sell quotes from Uniswap.
     /// @param takerToken Address of the taker token (what to sell).