diff --git a/ros_arduino_msgs/srv/ServoRead.srv b/ros_arduino_msgs/srv/ServoRead.srv
index d14b4e1..fd68ffa 100755
--- a/ros_arduino_msgs/srv/ServoRead.srv
+++ b/ros_arduino_msgs/srv/ServoRead.srv
@@ -1,3 +1,3 @@
 uint8 id
 ---
-int16 value
+float32 value
diff --git a/ros_arduino_msgs/srv/ServoWrite.srv b/ros_arduino_msgs/srv/ServoWrite.srv
index e4fa991..5a9170b 100755
--- a/ros_arduino_msgs/srv/ServoWrite.srv
+++ b/ros_arduino_msgs/srv/ServoWrite.srv
@@ -1,3 +1,3 @@
 uint8 id
-int16 value
+float32 value
 ---