From 5823ebb446cc82a9a59eac9e1df5e5ab07bc291a Mon Sep 17 00:00:00 2001
From: Keith Bennett <13375512+thisiskeithb@users.noreply.github.com>
Date: Mon, 3 Aug 2020 20:39:29 -0700
Subject: [PATCH] Assisted Tramming requires a probe (#18912)

---
 Marlin/Configuration_adv.h   | 2 +-
 Marlin/src/inc/SanityCheck.h | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index 37c9979771..3fae47384d 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -769,7 +769,7 @@
 #endif
 
 //
-// Add the G35 command to read bed corners to help adjust screws.
+// Add the G35 command to read bed corners to help adjust screws. Requires a bed probe.
 //
 //#define ASSISTED_TRAMMING
 #if ENABLED(ASSISTED_TRAMMING)
diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index 03b869aa6e..5608fcff03 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -2072,6 +2072,13 @@ static_assert(hbm[Z_AXIS] >= 0, "HOMING_BUMP_MM.Z must be greater than or equal
   #endif
 #endif
 
+/**
+ * G35 Assisted Tramming
+ */
+#if ENABLED(ASSISTED_TRAMMING) && !HAS_BED_PROBE
+  #error "ASSISTED_TRAMMING requires a bed probe."
+#endif
+
 /**
  * G38 Probe Target
  */