diff --git a/avr/apps/ma_light/README b/avr/apps/ma_light/README
index 0ecc796..f25defd 100644
--- a/avr/apps/ma_light/README
+++ b/avr/apps/ma_light/README
@@ -48,7 +48,7 @@ Example:
 1.3. MALSOURCEB
 ---------------------------
 
-Source for Birightness Messages:
+Source for Brightness Messages:
  aqhome-tool setdata -N nodes/XXXXXXXX/MALSOURCEB -v VVNN
 
  VVNN is a 16-bit value, lower 8 bit contain the source node address, higher 8 bit contain the