From 3619856fc9bac3744d83c7b9a0127e0f1f56f667 Mon Sep 17 00:00:00 2001
From: Peter Barker <pbarker@barker.dropbear.id.au>
Date: Mon, 9 Sep 2019 17:57:31 +1000
Subject: [PATCH] AP_NavEKF2: correct return of empty prearm string

---
 libraries/AP_NavEKF2/AP_NavEKF2_Measurements.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libraries/AP_NavEKF2/AP_NavEKF2_Measurements.cpp b/libraries/AP_NavEKF2/AP_NavEKF2_Measurements.cpp
index fe05ad0ce5..d504e1d2f2 100644
--- a/libraries/AP_NavEKF2/AP_NavEKF2_Measurements.cpp
+++ b/libraries/AP_NavEKF2/AP_NavEKF2_Measurements.cpp
@@ -603,6 +603,7 @@ void NavEKF2_core::readGpsData()
         } else {
             // report GPS fix status
             gpsCheckStatus.bad_fix = true;
+            hal.util->snprintf(prearm_fail_string, sizeof(prearm_fail_string), "Waiting for 3D fix");
         }
     }
 }