diff --git a/ArduCopter/GCS_Mavlink.cpp b/ArduCopter/GCS_Mavlink.cpp
index e8e474427a..d2da162a39 100644
--- a/ArduCopter/GCS_Mavlink.cpp
+++ b/ArduCopter/GCS_Mavlink.cpp
@@ -594,7 +594,7 @@ MAV_RESULT GCS_MAVLINK_Copter::handle_command_mount(const mavlink_command_long_t
     case MAV_CMD_DO_MOUNT_CONTROL:
         if(!copter.camera_mount.has_pan_control()) {
             copter.flightmode->auto_yaw.set_fixed_yaw(
-                (float)packet.param3 / 100.0f,
+                (float)packet.param3 * 0.01f,
                 0.0f,
                 0,0);
         }
@@ -878,7 +878,7 @@ void GCS_MAVLINK_Copter::handle_mount_message(const mavlink_message_t* msg)
         if(!copter.camera_mount.has_pan_control()) {
             // if the mount doesn't do pan control then yaw the entire vehicle instead:
             copter.flightmode->auto_yaw.set_fixed_yaw(
-                mavlink_msg_mount_control_get_input_c(msg)/100.0f,
+                mavlink_msg_mount_control_get_input_c(msg) * 0.01f,
                 0.0f,
                 0,
                 0);
@@ -1337,7 +1337,7 @@ float GCS_MAVLINK_Copter::vfr_hud_alt() const
     if (copter.g2.dev_options.get() & DevOptionVFR_HUDRelativeAlt) {
         // compatibility option for older mavlink-aware devices that
         // assume Copter returns a relative altitude in VFR_HUD.alt
-        return copter.current_loc.alt / 100.0f;
+        return copter.current_loc.alt * 0.01f;
     }
     return GCS_MAVLINK::vfr_hud_alt();
 }
diff --git a/ArduCopter/mode_guided.cpp b/ArduCopter/mode_guided.cpp
index 70a4e1c08b..7dbf373261 100644
--- a/ArduCopter/mode_guided.cpp
+++ b/ArduCopter/mode_guided.cpp
@@ -675,7 +675,7 @@ void Copter::ModeGuided::set_desired_velocity_with_accel_and_fence_limits(const
 void Copter::ModeGuided::set_yaw_state(bool use_yaw, float yaw_cd, bool use_yaw_rate, float yaw_rate_cds, bool relative_angle)
 {
     if (use_yaw) {
-        auto_yaw.set_fixed_yaw(yaw_cd / 100.0f, 0.0f, 0, relative_angle);
+        auto_yaw.set_fixed_yaw(yaw_cd * 0.01f, 0.0f, 0, relative_angle);
     } else if (use_yaw_rate) {
         auto_yaw.set_rate(yaw_rate_cds);
     }