diff --git a/src/backend/mysql/table.rs b/src/backend/mysql/table.rs
index 562ec36b..ec359412 100644
--- a/src/backend/mysql/table.rs
+++ b/src/backend/mysql/table.rs
@@ -153,7 +153,7 @@ impl TableBuilder for MysqlQueryBuilder {
                 }
                 TableAlterOption::DropForeignKey(name) => {
                     let mut foreign_key = TableForeignKey::new();
-                    foreign_key.name(&name.to_string());
+                    foreign_key.name(name.to_string());
                     let drop = ForeignKeyDropStatement {
                         foreign_key,
                         table: None,
diff --git a/src/backend/postgres/table.rs b/src/backend/postgres/table.rs
index a022d1d7..c45dbc7e 100644
--- a/src/backend/postgres/table.rs
+++ b/src/backend/postgres/table.rs
@@ -192,7 +192,7 @@ impl TableBuilder for PostgresQueryBuilder {
                 }
                 TableAlterOption::DropForeignKey(name) => {
                     let mut foreign_key = TableForeignKey::new();
-                    foreign_key.name(&name.to_string());
+                    foreign_key.name(name.to_string());
                     let drop = ForeignKeyDropStatement {
                         foreign_key,
                         table: None,