diff --git a/11.md b/11.md
index c71f89e..083ae8f 100644
--- a/11.md
+++ b/11.md
@@ -75,7 +75,6 @@ are rejected or fail immediately.
         "max_filters": 100,
         "max_limit": 5000,
         "max_subid_length": 100,
-        "min_prefix": 4,
         "max_event_tags": 100,
         "max_content_length": 8196,
         "min_pow_difficulty": 30,
@@ -102,9 +101,6 @@ Must be one or higher.
 
 - `max_subid_length`: maximum length of subscription id as a string.
 
-- `min_prefix`: for `authors` and `ids` filters which are to match against
-a hex prefix, you must provide at least this many hex digits in the prefix.
-
 - `max_limit`: the relay server will clamp each filter's `limit` value to this number.
 This means the client won't be able to get more than this number
 of events from a single subscription filter. This clamping is typically done silently
@@ -284,7 +280,6 @@ As of 2 May 2023 the following `curl` command provided these results.
 				  "max_filters":2500,
 				  "max_limit":5000,
 				  "max_subid_length":256,
-				  "min_prefix":4,
 				  "max_event_tags":2500,
 				  "max_content_length":65536,
 				  "min_pow_difficulty":0,