diff --git a/contracts/PullPaymentBid.sol b/contracts/PullPaymentBid.sol
index 247105eab..92239ef4d 100644
--- a/contracts/PullPaymentBid.sol
+++ b/contracts/PullPaymentBid.sol
@@ -1,14 +1,14 @@
 import './PullPaymentCapable.sol';
 
 contract PullPaymentBid is PullPaymentCapable {
-	address public highestBidder;
+  address public highestBidder;
   uint public highestBid;
   
   function bid() external {
     if (msg.value <= highestBid) throw;
     
     if (highestBidder != 0) {
-			asyncSend(highestBidder, highestBid);
+      asyncSend(highestBidder, highestBid);
     }
     highestBidder = msg.sender;
     highestBid = msg.value;