diff --git a/libraries/AP_NavEKF2/AP_NavEKF2_VehicleStatus.cpp b/libraries/AP_NavEKF2/AP_NavEKF2_VehicleStatus.cpp
index 796f9b087f..f90d04e456 100644
--- a/libraries/AP_NavEKF2/AP_NavEKF2_VehicleStatus.cpp
+++ b/libraries/AP_NavEKF2/AP_NavEKF2_VehicleStatus.cpp
@@ -167,7 +167,7 @@ bool NavEKF2_core::calcGpsGoodToAlign(void)
     if (gpsSpdAccFail) {
         hal.util->snprintf(prearm_fail_string,
                            sizeof(prearm_fail_string),
-                           "GPS speed error %.1f (needs %.1f)", (double)gpsSpdAccuracy, (double)(1.0f*checkScaler));
+                           "GPS speed error %.1f (needs < %.1f)", (double)gpsSpdAccuracy, (double)(1.0f*checkScaler));
         gpsCheckStatus.bad_sAcc = true;
     } else {
         gpsCheckStatus.bad_sAcc = false;