diff --git a/libraries/AP_NavEKF2/AP_NavEKF2.cpp b/libraries/AP_NavEKF2/AP_NavEKF2.cpp
index ad30bee0b1..2219d6a911 100644
--- a/libraries/AP_NavEKF2/AP_NavEKF2.cpp
+++ b/libraries/AP_NavEKF2/AP_NavEKF2.cpp
@@ -368,7 +368,7 @@ const AP_Param::GroupInfo NavEKF2::var_info[] = {
     // @Param: ABIAS_P_NSE
     // @DisplayName: Accelerometer bias stability (m/s^3)
     // @Description: This noise controls the growth of the vertical accelerometer delta velocity bias state error estimate. Increasing it makes accelerometer bias estimation faster and noisier.
-    // @Range: 0.00001 0.001
+    // @Range: 0.00001 0.005
     // @User: Advanced
     // @Units: m/s/s/s
     AP_GROUPINFO("ABIAS_P_NSE", 28, NavEKF2, _accelBiasProcessNoise, ABIAS_P_NSE_DEFAULT),
diff --git a/libraries/AP_NavEKF3/AP_NavEKF3.cpp b/libraries/AP_NavEKF3/AP_NavEKF3.cpp
index 095c6346d4..24b356cfa9 100644
--- a/libraries/AP_NavEKF3/AP_NavEKF3.cpp
+++ b/libraries/AP_NavEKF3/AP_NavEKF3.cpp
@@ -363,7 +363,7 @@ const AP_Param::GroupInfo NavEKF3::var_info[] = {
     // @Param: ABIAS_P_NSE
     // @DisplayName: Accelerometer bias stability (m/s^3)
     // @Description: This noise controls the growth of the vertical accelerometer delta velocity bias state error estimate. Increasing it makes accelerometer bias estimation faster and noisier.
-    // @Range: 0.00001 0.001
+    // @Range: 0.00001 0.005
     // @User: Advanced
     // @Units: m/s/s/s
     AP_GROUPINFO("ABIAS_P_NSE", 28, NavEKF3, _accelBiasProcessNoise, ABIAS_P_NSE_DEFAULT),