diff --git a/contracts/exchange-forwarder/contracts/src/MixinAssets.sol b/contracts/exchange-forwarder/contracts/src/MixinAssets.sol
index eb0e5c1392..9b6a896d13 100644
--- a/contracts/exchange-forwarder/contracts/src/MixinAssets.sol
+++ b/contracts/exchange-forwarder/contracts/src/MixinAssets.sol
@@ -82,6 +82,10 @@ contract MixinAssets is
     )
         internal
     {
+        if (amount == 0) {
+            return;
+        }
+
         bytes4 proxyId = assetData.readBytes4(0);
 
         if (