From 3bde4f48557f0ff8508c8789753f040bc90d7434 Mon Sep 17 00:00:00 2001
From: Scott Lahteine <sourcetree@thinkyhead.com>
Date: Tue, 14 Jul 2015 19:50:27 -0700
Subject: [PATCH] Require temp sensor for bed thermal protection

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

diff --git a/Marlin/temperature.cpp b/Marlin/temperature.cpp
index a662e99af8..07b3c9a65d 100644
--- a/Marlin/temperature.cpp
+++ b/Marlin/temperature.cpp
@@ -80,7 +80,7 @@ unsigned char soft_pwm_bed;
     static TRState thermal_runaway_state_machine[4] = { TRReset, TRReset, TRReset, TRReset };
     static millis_t thermal_runaway_timer[4]; // = {0,0,0,0};
   #endif
-  #ifdef THERMAL_PROTECTION_BED
+  #if defined(THERMAL_PROTECTION_BED) && TEMP_SENSOR_BED != 0
     static TRState thermal_runaway_bed_state_machine = TRReset;
     static millis_t thermal_runaway_bed_timer;
   #endif