diff --git a/management/server/user.go b/management/server/user.go
index 369df5238..a9aaa1b61 100644
--- a/management/server/user.go
+++ b/management/server/user.go
@@ -92,10 +92,10 @@ func (u *User) toUserInfo(userData *idp.UserData) (*UserInfo, error) {
 
 // Copy the user
 func (u *User) Copy() *User {
-	autoGroups := make([]string, 0)
-	autoGroups = append(autoGroups, u.AutoGroups...)
-	pats := make([]PersonalAccessToken, 0)
-	pats = append(pats, u.PATs...)
+	autoGroups := make([]string, len(u.AutoGroups))
+	copy(autoGroups, u.AutoGroups)
+	pats := make([]PersonalAccessToken, len(u.PATs))
+	copy(pats, u.PATs)
 	return &User{
 		Id:         u.Id,
 		Role:       u.Role,