diff --git a/ros_arduino_msgs/srv/AnalogWrite.srv b/ros_arduino_msgs/srv/AnalogWrite.srv
index 5973435..6169d65 100644
--- a/ros_arduino_msgs/srv/AnalogWrite.srv
+++ b/ros_arduino_msgs/srv/AnalogWrite.srv
@@ -1,3 +1,3 @@
 uint8 pin
-float32 value
+uint16 value
 ---