diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
index 62ebbdb16253dd81768485dc98e9bf1379434669..9873172e3fd331f4457fb70c5416dad7af9e3536 100644
--- a/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
+++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop2.c
@@ -2344,7 +2344,7 @@ static void vop2_setup_layer_mixer(struct vop2_video_port *vp)
 		port_sel |= FIELD_PREP(RK3568_OVL_PORT_SET__PORT2_MUX,
 			(vp2->nlayers + vp1->nlayers + vp0->nlayers - 1));
 	else
-		port_sel |= FIELD_PREP(RK3568_OVL_PORT_SET__PORT1_MUX, 8);
+		port_sel |= FIELD_PREP(RK3568_OVL_PORT_SET__PORT2_MUX, 8);
 
 	layer_sel = vop2_readl(vop2, RK3568_OVL_LAYER_SEL);