diff --git a/ArduPlane/Plane.h b/ArduPlane/Plane.h
index 030fb587a5..4d6c3b820d 100644
--- a/ArduPlane/Plane.h
+++ b/ArduPlane/Plane.h
@@ -761,7 +761,8 @@ private:
     void update_cruise();
     void update_fbwb_speed_height(void);
     void setup_turn_angle(void);
-    bool create_mixer_file(const char *filename);
+    bool print_buffer(char *&buf, uint16_t &buf_size, const char *fmt, ...);
+    bool create_mixer(char *buf, uint16_t buf_size, const char *filename);
     bool setup_failsafe_mixing(void);
     void set_control_channels(void);
     void init_rc_in();
diff --git a/ArduPlane/system.cpp b/ArduPlane/system.cpp
index 66e1771408..ef4a427509 100644
--- a/ArduPlane/system.cpp
+++ b/ArduPlane/system.cpp
@@ -105,7 +105,12 @@ void Plane::init_ardupilot()
 #if CONFIG_HAL_BOARD == HAL_BOARD_PX4
     // this must be before BoardConfig.init() so if
     // BRD_SAFETYENABLE==0 then we don't have safety off yet
-    setup_failsafe_mixing();
+    for (uint8_t tries=0; tries<10; tries++) {
+        if (setup_failsafe_mixing()) {
+            break;
+        }
+        hal.scheduler->delay(10);
+    }
 #endif
 
     BoardConfig.init();