diff --git a/payload/bin/ffscreen.py b/payload/bin/ffscreen.py
index f8e4ada..2f8d9a0 100644
--- a/payload/bin/ffscreen.py
+++ b/payload/bin/ffscreen.py
@@ -381,8 +381,8 @@ def main(argv):
     import argparse
     parser = argparse.ArgumentParser(description='draw one frame on /dev/fb0')
     parser.add_argument('--fb', default='/dev/fb0')
-    parser.add_argument('--size', default=None,
-                        help='WxH@BPP; default: ask sysfs')
+    parser.add_argument('--size', default='480x800@32',
+                        help='WxH@BPP; default: 480x800@32')
     parser.add_argument('--rotate', type=int, default=None,
                         choices=[0, 90, 270])
     parser.add_argument('--title', default='')