opendj-server-legacy/src/main/java/org/opends/server/extensions/StaticGroup.java
@@ -536,8 +536,7 @@ ERR_STATICGROUP_ADD_MEMBER_UPDATE_FAILED.get(userDN, groupEntryDN, modifyOperation.getErrorMessage())); } LinkedHashSet<CompactDn> newMemberDNs = new LinkedHashSet<>(memberDNs.size()+1); newMemberDNs.addAll(memberDNs); LinkedHashSet<CompactDn> newMemberDNs = new LinkedHashSet<CompactDn>(memberDNs); newMemberDNs.add(compactUserDN); memberDNs = newMemberDNs; }