diff --git a/drivers/video/sunxi/sunxi_display.c b/drivers/video/sunxi/sunxi_display.c
index 0630289c0a..f191ef16c6 100644
--- a/drivers/video/sunxi/sunxi_display.c
+++ b/drivers/video/sunxi/sunxi_display.c
@@ -625,6 +625,8 @@ static void sunxi_ctfb_mode_to_display_timing(const struct ctfb_res_modes *mode,
 	timing->vback_porch.typ = mode->upper_margin;
 	timing->vsync_len.typ = mode->vsync_len;
 
+	timing->flags = 0;
+
 	if (mode->sync & FB_SYNC_HOR_HIGH_ACT)
 		timing->flags |= DISPLAY_FLAGS_HSYNC_HIGH;
 	else