diff --git a/attribute/attribute.go b/attribute/attribute.go
index 6607f3a..a322bd0 100644
--- a/attribute/attribute.go
+++ b/attribute/attribute.go
@@ -34,6 +34,10 @@ func Init() error {
 }
 
 func Add(Key, Description, Default string) error {
+	result := store.DB.Exec(`select "value" from "attributes" where "key" = ?`, Key)
+	if result.RowsAffected != 0 {
+		return nil
+	}
 	a := &Attribute{
 		Key:         Key,
 		Description: Description,