From 70dc2ee9bb87bf0c4703afe45dac0a5a84a186d7 Mon Sep 17 00:00:00 2001
From: Keith Bennett <13375512+thisiskeithb@users.noreply.github.com>
Date: Tue, 13 Oct 2020 16:13:25 -0700
Subject: [PATCH] If needed, home before G34 (#19713)

---
 Marlin/src/gcode/calibrate/G34.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/Marlin/src/gcode/calibrate/G34.cpp b/Marlin/src/gcode/calibrate/G34.cpp
index fd876d3fe..0ca4490eb 100644
--- a/Marlin/src/gcode/calibrate/G34.cpp
+++ b/Marlin/src/gcode/calibrate/G34.cpp
@@ -38,7 +38,8 @@
 
 void GcodeSuite::G34() {
 
-  if (homing_needed()) return;
+  // Home before the alignment procedure
+  if (!all_axes_known()) home_all_axes();
 
   SET_SOFT_ENDSTOP_LOOSE(true);
   TEMPORARY_BED_LEVELING_STATE(false);