From cd066bfebadf922177628d576ccb3c780b3f24e5 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Sun, 4 Nov 2018 18:42:36 -0600
Subject: [PATCH] Extend error messages for E factors sanity-checks

---
 Marlin/src/inc/SanityCheck.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index 6e708d9b97..b0c7fbab62 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -1880,9 +1880,9 @@ constexpr float sanity_arr_1[] = DEFAULT_AXIS_STEPS_PER_UNIT,
 static_assert(COUNT(sanity_arr_1) >= XYZE, "DEFAULT_AXIS_STEPS_PER_UNIT requires 4 (or more) elements.");
 static_assert(COUNT(sanity_arr_2) >= XYZE, "DEFAULT_MAX_FEEDRATE requires 4 (or more) elements.");
 static_assert(COUNT(sanity_arr_3) >= XYZE, "DEFAULT_MAX_ACCELERATION requires 4 (or more) elements.");
-static_assert(COUNT(sanity_arr_1) <= XYZE_N, "DEFAULT_AXIS_STEPS_PER_UNIT has too many elements.");
-static_assert(COUNT(sanity_arr_2) <= XYZE_N, "DEFAULT_MAX_FEEDRATE has too many elements.");
-static_assert(COUNT(sanity_arr_3) <= XYZE_N, "DEFAULT_MAX_ACCELERATION has too many elements.");
+static_assert(COUNT(sanity_arr_1) <= XYZE_N, "DEFAULT_AXIS_STEPS_PER_UNIT has too many elements. (Did you forget to enable DISTINCT_E_FACTORS?)");
+static_assert(COUNT(sanity_arr_2) <= XYZE_N, "DEFAULT_MAX_FEEDRATE has too many elements. (Did you forget to enable DISTINCT_E_FACTORS?)");
+static_assert(COUNT(sanity_arr_3) <= XYZE_N, "DEFAULT_MAX_ACCELERATION has too many elements. (Did you forget to enable DISTINCT_E_FACTORS?)");
 
 #if ENABLED(CNC_COORDINATE_SYSTEMS) && ENABLED(NO_WORKSPACE_OFFSETS)
   #error "CNC_COORDINATE_SYSTEMS is incompatible with NO_WORKSPACE_OFFSETS."
-- 
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