diff --git a/59.md b/59.md
index 9bb5845b..ddeb83cb 100644
--- a/59.md
+++ b/59.md
@@ -53,7 +53,7 @@ without the receiver's or the sender's private key. The only public information
 }
 ```
 
-Tags MUST must always be empty in a `kind:13`. The inner event MUST always be unsigned.
+Tags MUST always be empty in a `kind:13`. The inner event MUST always be unsigned.
 
 ## 3. Gift Wrap Event Kind