diff --git a/EIPS/eip-721.md b/EIPS/eip-721.md
index 5b676469..33579a82 100644
--- a/EIPS/eip-721.md
+++ b/EIPS/eip-721.md
@@ -121,9 +121,10 @@ interface ERC721 /* is ERC165 */ {
 
     /// @notice Enable or disable approval for a third party ("operator") to manage
     ///  all of `msg.sender`'s assets.
-    /// @dev Emits the ApprovalForAll event
+    /// @dev Emits the ApprovalForAll event. The contract MUST allow
+    ///  multiple operators per owner.
     /// @param _operator Address to add to the set of authorized operators.
-    /// @param _approved True if the operators is approved, false to revoke approval
+    /// @param _approved True if the operator is approved, false to revoke approval
     function setApprovalForAll(address _operator, bool _approved) external;
 
     /// @notice Get the approved address for a single NFT