diff --git a/libraries/AP_InertialSensor/AP_InertialSensor.h b/libraries/AP_InertialSensor/AP_InertialSensor.h
index 8cd1fd23076487..bae72d86f9e70d 100644
--- a/libraries/AP_InertialSensor/AP_InertialSensor.h
+++ b/libraries/AP_InertialSensor/AP_InertialSensor.h
@@ -9,8 +9,6 @@
 #define AP_INERTIAL_SENSOR_ACCEL_VIBE_FILT_HZ           2.0f    // accel vibration filter hz
 #define AP_INERTIAL_SENSOR_ACCEL_PEAK_DETECT_TIMEOUT_MS 500     // peak-hold detector timeout
 
-#define AP_INERTIAL_SENSOR_RATE_LOOP_BUFFER_SIZE 8     // gyro buffer size for rate loop
-
 #include <AP_HAL/AP_HAL_Boards.h>
 
 #include <stdint.h>
diff --git a/libraries/AP_InertialSensor/FastRateBuffer.h b/libraries/AP_InertialSensor/FastRateBuffer.h
index c4f53b7bf6d817..77ce3e267915cb 100644
--- a/libraries/AP_InertialSensor/FastRateBuffer.h
+++ b/libraries/AP_InertialSensor/FastRateBuffer.h
@@ -48,4 +48,4 @@ class FastRateBuffer
     HAL_BinarySemaphore _notifier;
     HAL_Semaphore _mutex;
 };
-#endif
\ No newline at end of file
+#endif