diff --git a/lib/asn1/rfc2459.asn1 b/lib/asn1/rfc2459.asn1
index 14a37b5a1..a8023ce32 100644
--- a/lib/asn1/rfc2459.asn1
+++ b/lib/asn1/rfc2459.asn1
@@ -75,7 +75,7 @@ DirectoryString ::= CHOICE {
 
 Attribute ::= SEQUENCE {
         type    AttributeType,
-        value   AttributeValue
+        value   SET OF -- AttributeValue -- heim_any
 }
 
 AttributeTypeAndValue ::= SEQUENCE {