diff --git a/Firmware/SdFatUtil.cpp b/Firmware/SdFatUtil.cpp
index 51da4ee2..50206ab9 100644
--- a/Firmware/SdFatUtil.cpp
+++ b/Firmware/SdFatUtil.cpp
@@ -48,24 +48,16 @@ void SdFatUtil::set_stack_guard()
 {	
 	uint32_t *stack_guard;
 
-	stack_guard = (uint32_t*)&__bss_end;
+	stack_guard = (uint32_t*)(&__bss_end + STACK_GUARD_MARGIN);
     *stack_guard = STACK_GUARD_TEST_VALUE;
 }
 
 bool SdFatUtil::test_stack_integrity()
 {
-	uint32_t* stack_guard = (uint32_t*)&__bss_end;
+	uint32_t* stack_guard = (uint32_t*)(&__bss_end + STACK_GUARD_MARGIN);
 	return (*stack_guard == STACK_GUARD_TEST_VALUE);
 }
 
-uint32_t SdFatUtil::get_stack_guard_test_value()
-{
-	uint32_t* stack_guard;
-	uint32_t output;
-	stack_guard = (uint32_t*)&__bss_end;
-	output = *stack_guard;
-	return(output);
-}
 //------------------------------------------------------------------------------
 /** %Print a string in flash memory.
  *
diff --git a/Firmware/SdFatUtil.h b/Firmware/SdFatUtil.h
index c42b74b1..2a70d98a 100644
--- a/Firmware/SdFatUtil.h
+++ b/Firmware/SdFatUtil.h
@@ -41,11 +41,10 @@ namespace SdFatUtil {
   void SerialPrintln_P(PGM_P str);
   void set_stack_guard();
   bool test_stack_integrity();
-  uint32_t get_stack_guard_test_value();
 }
 
 using namespace SdFatUtil;  // NOLINT
 #endif  // #define SdFatUtil_h
 
 
-#endif
\ No newline at end of file
+#endif
diff --git a/Firmware/variants/1_75mm_MK2-RAMBo10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK2-RAMBo10a-E3Dv6full.h
index 4c20082e..7ccd9151 100644
--- a/Firmware/variants/1_75mm_MK2-RAMBo10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK2-RAMBo10a-E3Dv6full.h
@@ -418,6 +418,7 @@ THERMISTORS SETTINGS
 #endif
 
 #define STACK_GUARD_TEST_VALUE 0xA2A2
+#define STACK_GUARD_MARGIN     32
 
 #define MAX_BED_TEMP_CALIBRATION 50
 #define MAX_HOTEND_TEMP_CALIBRATION 50
diff --git a/Firmware/variants/1_75mm_MK2-RAMBo13a-E3Dv6full.h b/Firmware/variants/1_75mm_MK2-RAMBo13a-E3Dv6full.h
index 35313a41..4686f097 100644
--- a/Firmware/variants/1_75mm_MK2-RAMBo13a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK2-RAMBo13a-E3Dv6full.h
@@ -407,6 +407,7 @@ THERMISTORS SETTINGS
 #endif
 
 #define STACK_GUARD_TEST_VALUE 0xA2A2
+#define STACK_GUARD_MARGIN     32
 
 #define MAX_BED_TEMP_CALIBRATION 50
 #define MAX_HOTEND_TEMP_CALIBRATION 50
diff --git a/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h
index b05475ab..fa7f2690 100644
--- a/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK25-RAMBo10a-E3Dv6full.h
@@ -469,6 +469,7 @@
 #define TEMP_SENSOR_PINDA 1
 
 #define STACK_GUARD_TEST_VALUE 0xA2A2
+#define STACK_GUARD_MARGIN     32
 
 #define MAX_BED_TEMP_CALIBRATION 50
 #define MAX_HOTEND_TEMP_CALIBRATION 50
diff --git a/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h b/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h
index 0750bc5c..10aa14f9 100644
--- a/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK25-RAMBo13a-E3Dv6full.h
@@ -470,6 +470,7 @@
 #define TEMP_SENSOR_PINDA 1
 
 #define STACK_GUARD_TEST_VALUE 0xA2A2
+#define STACK_GUARD_MARGIN     32
 
 #define MAX_BED_TEMP_CALIBRATION 50
 #define MAX_HOTEND_TEMP_CALIBRATION 50
diff --git a/Firmware/variants/1_75mm_MK25S-RAMBo10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK25S-RAMBo10a-E3Dv6full.h
index d8a4158b..4540fd72 100644
--- a/Firmware/variants/1_75mm_MK25S-RAMBo10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK25S-RAMBo10a-E3Dv6full.h
@@ -469,6 +469,7 @@
 #define TEMP_SENSOR_PINDA 1
 
 #define STACK_GUARD_TEST_VALUE 0xA2A2
+#define STACK_GUARD_MARGIN     32
 
 #define MAX_BED_TEMP_CALIBRATION 50
 #define MAX_HOTEND_TEMP_CALIBRATION 50
diff --git a/Firmware/variants/1_75mm_MK25S-RAMBo13a-E3Dv6full.h b/Firmware/variants/1_75mm_MK25S-RAMBo13a-E3Dv6full.h
index 9a25dce2..53773e97 100644
--- a/Firmware/variants/1_75mm_MK25S-RAMBo13a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK25S-RAMBo13a-E3Dv6full.h
@@ -470,6 +470,7 @@
 #define TEMP_SENSOR_PINDA 1
 
 #define STACK_GUARD_TEST_VALUE 0xA2A2
+#define STACK_GUARD_MARGIN     32
 
 #define MAX_BED_TEMP_CALIBRATION 50
 #define MAX_HOTEND_TEMP_CALIBRATION 50
diff --git a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
index b03fe726..f6b17889 100644
--- a/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK3-EINSy10a-E3Dv6full.h
@@ -598,6 +598,7 @@
 #define TEMP_SENSOR_AMBIENT 2000
 
 #define STACK_GUARD_TEST_VALUE 0xA2A2
+#define STACK_GUARD_MARGIN     32
 
 #define MAX_BED_TEMP_CALIBRATION 50
 #define MAX_HOTEND_TEMP_CALIBRATION 50
diff --git a/Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h b/Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h
index 934c0913..92698b47 100644
--- a/Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h
+++ b/Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h
@@ -602,6 +602,7 @@
 #define TEMP_SENSOR_AMBIENT 2000
 
 #define STACK_GUARD_TEST_VALUE 0xA2A2
+#define STACK_GUARD_MARGIN     32
 
 #define MAX_BED_TEMP_CALIBRATION 50
 #define MAX_HOTEND_TEMP_CALIBRATION 50