diff --git a/contracts/eip/interface/IERC721Supply.sol b/contracts/eip/interface/IERC721Supply.sol
index c640242df..5646a521e 100644
--- a/contracts/eip/interface/IERC721Supply.sol
+++ b/contracts/eip/interface/IERC721Supply.sol
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 pragma solidity ^0.8.0;
 
-/// @title ERC-721 Non-Fungible Token Standard, optional supplu extension
+/// @title ERC-721 Non-Fungible Token Standard, optional supply extension
 /// @dev See https://eips.ethereum.org/EIPS/eip-721
 ///  Note: the ERC-165 identifier for this interface is 0x780e9d63.
 /* is ERC721 */
diff --git a/contracts/extension/DelayedReveal.sol b/contracts/extension/DelayedReveal.sol
index bc0d09d22..72723e00e 100644
--- a/contracts/extension/DelayedReveal.sol
+++ b/contracts/extension/DelayedReveal.sol
@@ -73,7 +73,7 @@ abstract contract DelayedReveal is IDelayedReveal {
         assembly {
             // Set result to free memory pointer
             result := mload(0x40)
-            // Increase free memory pointer by lenght + 32
+            // Increase free memory pointer by length + 32
             mstore(0x40, add(add(result, length), 32))
             // Set result length
             mstore(result, length)
diff --git a/contracts/extension/Staking1155.sol b/contracts/extension/Staking1155.sol
index d30885b12..b5edf594c 100644
--- a/contracts/extension/Staking1155.sol
+++ b/contracts/extension/Staking1155.sol
@@ -20,7 +20,7 @@ abstract contract Staking1155 is ReentrancyGuard, IStaking1155 {
     /// @dev Flag to check direct transfers of staking tokens.
     uint8 internal isStaking = 1;
 
-    ///@dev Next staking condition Id. Tracks number of conditon updates so far.
+    ///@dev Next staking condition Id. Tracks number of condition updates so far.
     uint64 private nextDefaultConditionId;
 
     ///@dev List of token-ids ever staked.
@@ -32,7 +32,7 @@ abstract contract Staking1155 is ReentrancyGuard, IStaking1155 {
     ///@dev Mapping from default condition-id to default condition.
     mapping(uint64 => StakingCondition) private defaultCondition;
 
-    ///@dev Mapping from token-id to next staking condition Id for the token. Tracks number of conditon updates so far.
+    ///@dev Mapping from token-id to next staking condition Id for the token. Tracks number of condition updates so far.
     mapping(uint256 => uint64) private nextConditionId;
 
     ///@dev Mapping from token-id and staker address to Staker struct. See {struct IStaking1155.Staker}.