diff --git a/modules/backend/handlers/users.go b/modules/backend/handlers/users.go
index 100835a..e215e64 100644
--- a/modules/backend/handlers/users.go
+++ b/modules/backend/handlers/users.go
@@ -71,10 +71,7 @@ func sqlDate2oapi(p_date pgtype.Timestamptz) *time.Time {
 
 func oapiDate2sql(t *time.Time) pgtype.Timestamptz {
 	if t == nil {
-		return pgtype.Timestamptz{
-			Time:  time.Now(),
-			Valid: true,
-		}
+		return pgtype.Timestamptz{Valid: false}
 	}
 	return pgtype.Timestamptz{
 		Time:  *t,
@@ -389,9 +386,6 @@ func (s Server) AddUserTitle(ctx context.Context, request oapi.AddUserTitleReque
 			// fmt.Println(pgErr.Code)    // => 42601
 			if pgErr.Code == pgErrDuplicateKey { //duplicate key value
 				return oapi.AddUserTitle409Response{}, nil
-			} else {
-				log.Errorf("%v", err)
-				return oapi.AddUserTitle500Response{}, nil
 			}
 		} else {
 			log.Errorf("%v", err)