diff --git a/contracts/governance/TimelockController.sol b/contracts/governance/TimelockController.sol
index d5b18ace6..b091f793c 100644
--- a/contracts/governance/TimelockController.sol
+++ b/contracts/governance/TimelockController.sol
@@ -164,7 +164,7 @@ contract TimelockController is AccessControl, IERC721Receiver, IERC1155Receiver
     }
 
     /**
-     * @dev Returns the timestamp at with an operation becomes ready (0 for
+     * @dev Returns the timestamp at which an operation becomes ready (0 for
      * unset operations, 1 for done operations).
      */
     function getTimestamp(bytes32 id) public view virtual returns (uint256 timestamp) {