diff --git a/scm-webapp/src/main/java/sonia/scm/api/v2/resources/GroupToGroupDtoMapper.java b/scm-webapp/src/main/java/sonia/scm/api/v2/resources/GroupToGroupDtoMapper.java
index 969737974b..3afd5c4c22 100644
--- a/scm-webapp/src/main/java/sonia/scm/api/v2/resources/GroupToGroupDtoMapper.java
+++ b/scm-webapp/src/main/java/sonia/scm/api/v2/resources/GroupToGroupDtoMapper.java
@@ -36,7 +36,7 @@ public abstract class GroupToGroupDtoMapper extends BaseMapper<Group, GroupDto>
 
   @AfterMapping
   void mapMembers(Group group, @MappingTarget GroupDto target) {
-    List<MemberDto> memberDtos = group.getMembers().stream().map(name -> this.createMember(name)).collect(Collectors.toList());
+    List<MemberDto> memberDtos = group.getMembers().stream().map(this::createMember).collect(Collectors.toList());
     target.withEmbedded("members", memberDtos);
   }