diff --git a/ArduCopter/ArduCopter.pde b/ArduCopter/ArduCopter.pde
index 6a19cdb90c..7b2dfe3a30 100644
--- a/ArduCopter/ArduCopter.pde
+++ b/ArduCopter/ArduCopter.pde
@@ -179,7 +179,7 @@ static AP_Int8                *flight_modes = &g.flight_mode1;
     AP_Baro_MS5611 barometer;
 #endif
 
-    AP_Compass_HMC5843      compass(Parameters::k_param_compass);
+    AP_Compass_HMC5843      compass;
 #endif
 
 #ifdef OPTFLOW_ENABLED
diff --git a/ArduCopter/GCS_Mavlink.pde b/ArduCopter/GCS_Mavlink.pde
index 77a1ece189..7c7b97a017 100644
--- a/ArduCopter/GCS_Mavlink.pde
+++ b/ArduCopter/GCS_Mavlink.pde
@@ -1415,13 +1415,13 @@ void GCS_MAVLINK::handleMessage(mavlink_message_t* msg)
 					((AP_Int32 *)vp)->set_and_save(packet.param_value+rounding_addition);
                 } else if (var_type == AP_PARAM_INT16) {
 #if LOGGING_ENABLED == ENABLED
-					Log_Write_Data(3, ((AP_Int16 *)vp)->get());
+					Log_Write_Data(3, (int32_t)((AP_Int16 *)vp)->get());
 #endif
 					if (packet.param_value < 0) rounding_addition = -rounding_addition;
 					((AP_Int16 *)vp)->set_and_save(packet.param_value+rounding_addition);
                 } else if (var_type == AP_PARAM_INT8) {
 #if LOGGING_ENABLED == ENABLED
-					Log_Write_Data(4, ((AP_Int8 *)vp)->get());
+					Log_Write_Data(4, (int32_t)((AP_Int8 *)vp)->get());
 #endif
 					if (packet.param_value < 0) rounding_addition = -rounding_addition;
 					((AP_Int8 *)vp)->set_and_save(packet.param_value+rounding_addition);