diff --git a/libraries/AP_ADC/AP_ADC_HIL.cpp b/libraries/AP_ADC/AP_ADC_HIL.cpp
index 2f533286d6..da15c885f4 100644
--- a/libraries/AP_ADC/AP_ADC_HIL.cpp
+++ b/libraries/AP_ADC/AP_ADC_HIL.cpp
@@ -17,7 +17,7 @@ const int8_t AP_ADC_HIL::sensorSign[6]	= { 1, -1, -1,-1,  1,  1};
 const float AP_ADC_HIL::gyroBias[3]	= {1665,1665,1665};
 const float AP_ADC_HIL::accelBias[3]	= {2025,2025,2025};
 // gyroScale = 1/[GyroGain*pi/180]   GyroGains (0.4,0.41,0.41)
-const float AP_ADC_HIL::gyroScale[3] = {142.239, 139.746, 139.746}; 
+const float AP_ADC_HIL::gyroScale[3] = {143.239, 139.746, 139.746}; 
 const float AP_ADC_HIL::accelScale[3] = {418,418,418}; // adcPerG
 
 AP_ADC_HIL::AP_ADC_HIL()