diff --git a/scripts/c2_init.sh b/scripts/c2_init.sh
index 66e48af9b..64c515f3a 100644
--- a/scripts/c2_init.sh
+++ b/scripts/c2_init.sh
@@ -108,6 +108,9 @@ case $mode in
 			;;
 esac
 
+# force 16bpp for 4k
+[ "$Y" = "2160" ] && bpp=16
+
 common_display_setup
 
 # Console unblack