diff --git a/schemas/ldap/nostr_key.ldif b/schemas/ldap/nostr_key.ldif
index 9d6e63a..e2f8da1 100644
--- a/schemas/ldap/nostr_key.ldif
+++ b/schemas/ldap/nostr_key.ldif
@@ -4,6 +4,6 @@ add: attributeTypes
 attributeTypes: ( 1.3.6.1.4.1.61554.1.1.2.1.21
   NAME 'nostrKey'
   DESC 'Nostr public key'
-  EQUALITY caseIgnoreMatch
+  EQUALITY caseExactIA5Match
   SYNTAX 1.3.6.1.4.1.1466.115.121.1.26
   SINGLE-VALUE )