diff --git a/contracts/Token.sol b/contracts/Token.sol
index 5e7097a..868ebd7 100644
--- a/contracts/Token.sol
+++ b/contracts/Token.sol
@@ -350,16 +350,16 @@ contract Token {
     }
 
     function _writeCheckpoint(address delegatee, uint32 nCheckpoints, uint96 oldVotes, uint96 newVotes) internal {
-      uint32 blockNumber = safe32(block.number, "Tkn::_writeCheckpoint: block number exceeds 32 bits");
+        uint32 blockNumber = safe32(block.number, "Tkn::_writeCheckpoint: block number exceeds 32 bits");
 
-      if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
-          checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
-      } else {
-          checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
-          numCheckpoints[delegatee] = nCheckpoints + 1;
-      }
+        if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
+            checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
+        } else {
+            checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
+            numCheckpoints[delegatee] = nCheckpoints + 1;
+        }
 
-      emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
+        emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
     }