diff --git a/33.md b/33.md
index 10681fac..c93c36e7 100644
--- a/33.md
+++ b/33.md
@@ -10,7 +10,7 @@ This NIP adds a new event range that allows for replacement of events that have
 
 Implementation
 --------------
-The value of a tag is defined as the first parameter of a tag after the tag name.
+The value of a tag can be any string and is defined as the first parameter of a tag after the tag name.
 
 A *parameterized replaceable event* is defined as an event with a kind `30000 <= n < 40000`.
 Upon a parameterized replaceable event with a newer timestamp than the currently known latest