diff --git a/drivers/net/dsa/rtl8366rb.c b/drivers/net/dsa/rtl8366rb.c
index ddc24f5e4123..a7ceffc2a70b 100644
--- a/drivers/net/dsa/rtl8366rb.c
+++ b/drivers/net/dsa/rtl8366rb.c
@@ -1318,7 +1318,7 @@ static bool rtl8366rb_is_vlan_valid(struct realtek_smi *smi, unsigned int vlan)
 	if (smi->vlan4k_enabled)
 		max = RTL8366RB_NUM_VIDS - 1;
 
-	if (vlan == 0 || vlan >= max)
+	if (vlan == 0 || vlan > max)
 		return false;
 
 	return true;