diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
index 1877ed7..50f7eef 100644
--- a/drivers/net/bonding/bond_sysfs.c
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -1053,6 +1053,7 @@ static ssize_t bonding_store_primary(struct device *d,
                pr_info("%s: Setting primary slave to None.\n",
                        bond->dev->name);
                bond->primary_slave = NULL;
+               memset(bond->params.primary, '\0', sizeof(bond->params.primary));
                bond_select_active_slave(bond);
                goto out;
        }