diff --git a/sw/airborne/subsystems/imu/imu_aspirin2.h b/sw/airborne/subsystems/imu/imu_aspirin2.h
index 8d0e0bc576..a4c23e71df 100644
--- a/sw/airborne/subsystems/imu/imu_aspirin2.h
+++ b/sw/airborne/subsystems/imu/imu_aspirin2.h
@@ -71,18 +71,18 @@
 
 /** default accel sensitivy from the datasheet
  * MPU60X0 has 2048 LSB/g
- * fixed point sens: 9.81 [m/s^2] / 2048 [LSB/g] * 2^INT32_ACCEL_FRAC
- * sens = 9.81 / 2048 * 1024 = 4.905
+ * fixed point sens: 9.81 [m/s^2] / 1024 [LSB/g] * 2^INT32_ACCEL_FRAC
+ * sens = 9.81 / 1024 * 1024 = 9.81
  */
 #if !defined IMU_ACCEL_X_SENS & !defined IMU_ACCEL_Y_SENS & !defined IMU_ACCEL_Z_SENS
-#define IMU_ACCEL_X_SENS 4.905
-#define IMU_ACCEL_X_SENS_NUM 4905
+#define IMU_ACCEL_X_SENS 9.81
+#define IMU_ACCEL_X_SENS_NUM 9810
 #define IMU_ACCEL_X_SENS_DEN 1000
-#define IMU_ACCEL_Y_SENS 4.905
-#define IMU_ACCEL_Y_SENS_NUM 4905
+#define IMU_ACCEL_Y_SENS 9.81
+#define IMU_ACCEL_Y_SENS_NUM 9810
 #define IMU_ACCEL_Y_SENS_DEN 1000
-#define IMU_ACCEL_Z_SENS 4.905
-#define IMU_ACCEL_Z_SENS_NUM 4905
+#define IMU_ACCEL_Z_SENS 9.81
+#define IMU_ACCEL_Z_SENS_NUM 9810
 #define IMU_ACCEL_Z_SENS_DEN 1000
 #endif
 #if !defined IMU_ACCEL_X_NEUTRAL & !defined IMU_ACCEL_Y_NEUTRAL & !defined IMU_ACCEL_Z_NEUTRAL