diff --git a/plasma_cash/root_chain/contracts/Libraries/RLP.sol b/plasma_cash/root_chain/contracts/Libraries/RLP.sol
index 91273ac..fbcbe93 100644
--- a/plasma_cash/root_chain/contracts/Libraries/RLP.sol
+++ b/plasma_cash/root_chain/contracts/Libraries/RLP.sol
@@ -126,11 +126,10 @@ library RLP {
         view
         returns (address data)
     {
-        uint rStartPos;
         uint len;
-        (rStartPos, len) = _decode(self);
+        (, len) = _decode(self);
         require(len <= 20);
-	return address(toUint(self));
+        return address(toUint(self));
     }
 
     /// @dev Return the RLP encoded bytes.