From 5dd87d2e740b2f7096e6869ae67e250adfdd92f9 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <sourcetree@thinkyhead.com>
Date: Tue, 14 Apr 2015 04:05:51 -0700
Subject: [PATCH] Enable all old_z_*_endstop vars for Z_DUAL_ENDSTOPS

- Potentially addressing #1911
---
 Marlin/stepper.cpp | 15 ++++-----------
 1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/Marlin/stepper.cpp b/Marlin/stepper.cpp
index 2ad555327d..9a243caabe 100644
--- a/Marlin/stepper.cpp
+++ b/Marlin/stepper.cpp
@@ -98,19 +98,12 @@ static volatile bool endstop_z_probe_hit = false; // Leaving this in even if Z_P
 #if HAS_Y_MAX
   static bool old_y_max_endstop = false;
 #endif
-#if HAS_Z_MIN
+
+#ifdef Z_DUAL_ENDSTOPS
   static bool old_z_min_endstop = false;
-#endif
-#if HAS_Z_MAX
   static bool old_z_max_endstop = false;
-#endif
-#ifdef Z_DUAL_ENDSTOPS
-  // #if HAS_Z2_MIN
-    static bool old_z2_min_endstop = false;
-  // #endif
-  // #if HAS_Z2_MAX
-    static bool old_z2_max_endstop = false;
-  // #endif
+  static bool old_z2_min_endstop = false;
+  static bool old_z2_max_endstop = false;
 #endif
 
 #ifdef Z_PROBE_ENDSTOP // No need to check for valid pin, SanityCheck.h already does this.