diff --git a/ArduCopter/ArduCopter.pde b/ArduCopter/ArduCopter.pde
index b2baada28b..bf7365c6c5 100644
--- a/ArduCopter/ArduCopter.pde
+++ b/ArduCopter/ArduCopter.pde
@@ -550,7 +550,7 @@ static int16_t throttle_accel_target_ef;    // earth frame throttle acceleration
 static bool throttle_accel_controller_active;   // true when accel based throttle controller is active, false when higher level throttle controllers are providing throttle output directly
 static float throttle_avg;                  // g.throttle_cruise as a float
 static int16_t desired_climb_rate;          // pilot desired climb rate - for logging purposes only
-static float target_alt_for_reporting;      // target altitude for reporting (logs and ground station)
+static float target_alt_for_reporting;      // target altitude in cm for reporting (logs and ground station)
 
 
 ////////////////////////////////////////////////////////////////////////////////
@@ -1916,13 +1916,13 @@ void update_throttle_mode(void)
     }
 }
 
-// set_target_alt_for_reporting - set target altitude for reporting purposes (logs and gcs)
-static void set_target_alt_for_reporting(float alt)
+// set_target_alt_for_reporting - set target altitude in cm for reporting purposes (logs and gcs)
+static void set_target_alt_for_reporting(float alt_cm)
 {
-    target_alt_for_reporting = alt;
+    target_alt_for_reporting = alt_cm;
 }
 
-// get_target_alt_for_reporting - returns target altitude for reporting purposes (logs and gcs)
+// get_target_alt_for_reporting - returns target altitude in cm for reporting purposes (logs and gcs)
 static float get_target_alt_for_reporting()
 {
     return target_alt_for_reporting;
diff --git a/ArduCopter/Log.pde b/ArduCopter/Log.pde
index fa99470eb1..dd3c251f04 100644
--- a/ArduCopter/Log.pde
+++ b/ArduCopter/Log.pde
@@ -324,7 +324,7 @@ static void Log_Write_Control_Tuning()
         throttle_in         : g.rc_3.control_in,
         sonar_alt           : sonar_alt,
         baro_alt            : baro_alt,
-        next_wp_alt         : get_target_alt_for_reporting(),
+        next_wp_alt         : get_target_alt_for_reporting() / 100.0f,
         nav_throttle        : nav_throttle,
         angle_boost         : angle_boost,
         climb_rate          : climb_rate,