From f79907bd1e9a16322545edc660523a84c4ddb4c1 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <andrew@tridgell.net>
Date: Sat, 28 Sep 2019 13:51:39 +1000
Subject: [PATCH] AP_NavEKF: fixed build with vector index checking

---
 libraries/AP_NavEKF/AP_NavEKF_core_common.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/libraries/AP_NavEKF/AP_NavEKF_core_common.h b/libraries/AP_NavEKF/AP_NavEKF_core_common.h
index 0adbded311..4c0d6c19ef 100644
--- a/libraries/AP_NavEKF/AP_NavEKF_core_common.h
+++ b/libraries/AP_NavEKF/AP_NavEKF_core_common.h
@@ -18,6 +18,7 @@
 
 #include <stdint.h>
 #include <AP_Math/AP_Math.h>
+#include <AP_Math/vectorN.h>
 
 /*
   this declares a common parent class for AP_NavEKF2 and