diff --git a/led-badge-11x44.py b/led-badge-11x44.py
index 4cf6b5a..2995c35 100755
--- a/led-badge-11x44.py
+++ b/led-badge-11x44.py
@@ -376,7 +376,9 @@ def header(lengths, speeds, modes, blink, ants):
     h[8+i] = 16*s[i] + m[i]
 
   for i in range(len(lengths)):
-    h[17+2*i] = lengths[i]
+    h[17+(2*i)-1] = lengths[i] // 256
+    h[17+(2*i)]   = lengths[i] % 256
+
 
   return h