diff --git a/contracts/ReentrancyGuard.sol b/contracts/ReentrancyGuard.sol
index b076d5500..00daf5832 100644
--- a/contracts/ReentrancyGuard.sol
+++ b/contracts/ReentrancyGuard.sol
@@ -1,7 +1,7 @@
 pragma solidity ^0.4.18;
 
 /**
- * @title Helps contracts guard agains rentrancy attacks.
+ * @title Helps contracts guard agains reentrancy attacks.
  * @author Remco Bloemen <remco@2π.com>
  * @notice If you mark a function `nonReentrant`, you should also
  * mark it `external`.