diff --git a/libraries/AP_InertialSensor/AP_InertialSensor.cpp b/libraries/AP_InertialSensor/AP_InertialSensor.cpp
index 45f5ba3bd6b357398d940e0d3ae9a1a1b9998353..15fee8cd5718c71b38adbf979c9a912e6e4d35fe 100644
--- a/libraries/AP_InertialSensor/AP_InertialSensor.cpp
+++ b/libraries/AP_InertialSensor/AP_InertialSensor.cpp
@@ -477,7 +477,7 @@ bool AP_InertialSensor::_calibrate_accel( Vector3f accel_sample[6],
         success = false;
     }
     // sanity check offsets (2.0 is roughly 2/10th of a G, 5.0 is roughly half a G)
-    if( accel_offsets.is_nan() || fabsf(accel_offsets.x) > 2.0f || fabsf(accel_offsets.y) > 2.0f || fabsf(accel_offsets.z) > 3.0f ) {
+    if( accel_offsets.is_nan() || fabsf(accel_offsets.x) > 3.0f || fabsf(accel_offsets.y) > 3.0f || fabsf(accel_offsets.z) > 3.0f ) {
         success = false;
     }