diff --git a/16.md b/16.md
index 80a6b3d9..4d9481d4 100644
--- a/16.md
+++ b/16.md
@@ -16,7 +16,9 @@ Upon a regular event being received, the relay SHOULD send it to all clients wit
 Replaceable Events
 ------------------
 A *replaceable event* is defined as an event with a kind `10000 <= n < 20000`.
-Upon a replaceable event with a newer timestamp than the currently known latest replaceable event with the same kind being received, and signed by the same key, the old event SHOULD be discarded and replaced with the newer event.
+Upon a replaceable event with a newer timestamp than the currently known latest replaceable event with the same kind and author being received, the old event SHOULD be discarded,
+effectively replacing what gets returned when querying for
+`author:kind` tuples.
 
 Ephemeral Events
 ----------------
diff --git a/33.md b/33.md
index 60f3da66..10681fac 100644
--- a/33.md
+++ b/33.md
@@ -14,8 +14,10 @@ The value of a tag 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
-replaceable event with the same kind and first `d` tag value being received, the old event
-SHOULD be discarded and replaced with the newer event.
+replaceable event with the same kind, author and first `d` tag value being received, the old event
+SHOULD be discarded, effectively replacing what gets returned when querying for
+`author:kind:d-tag` tuples.
+
 A missing or a `d` tag with no value should be interpreted equivalent to a `d` tag with the
 value as an empty string. Events from the same author with any of the following `tags`
 replace each other: