From bde30b2b4837c816789d42896ad5654222ff4c06 Mon Sep 17 00:00:00 2001
From: Erik van der Zalm <erik@vdzalm.eu>
Date: Sun, 12 Feb 2012 01:36:42 +0800
Subject: [PATCH] Corrected e-length calculation in planner

---
 Marlin/planner.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Marlin/planner.cpp b/Marlin/planner.cpp
index 2eb0733330..b895b95e52 100644
--- a/Marlin/planner.cpp
+++ b/Marlin/planner.cpp
@@ -518,7 +518,7 @@ void plan_buffer_line(const float &x, const float &y, const float &z, const floa
   delta_mm[Z_AXIS] = (target[Z_AXIS]-position[Z_AXIS])/axis_steps_per_unit[Z_AXIS];
   delta_mm[E_AXIS] = (target[E_AXIS]-position[E_AXIS])/axis_steps_per_unit[E_AXIS];
   if ( block->steps_x == 0 && block->steps_y == 0 && block->steps_z == 0 ) {
-    block->millimeters = delta_mm[E_AXIS];
+    block->millimeters = abs(delta_mm[E_AXIS]);
   } else {
     block->millimeters = sqrt(square(delta_mm[X_AXIS]) + square(delta_mm[Y_AXIS]) + square(delta_mm[Z_AXIS]));
   }