diff --git a/Marlin/pins_MEGATRONICS_3.h b/Marlin/pins_MEGATRONICS_3.h
index cc1c947bd..419f80ba5 100644
--- a/Marlin/pins_MEGATRONICS_3.h
+++ b/Marlin/pins_MEGATRONICS_3.h
@@ -61,8 +61,6 @@
   #define Z_MIN_PROBE_PIN  19
 #endif
 
-#define SLED_PIN           -1
-
 //
 // Steppers
 //
diff --git a/Marlin/pins_RAMBO.h b/Marlin/pins_RAMBO.h
index 828994075..e4df16677 100755
--- a/Marlin/pins_RAMBO.h
+++ b/Marlin/pins_RAMBO.h
@@ -63,10 +63,6 @@
   #define Z_MIN_PROBE_PIN  30
 #endif
 
-#if ENABLED(Z_PROBE_SLED)
-  #define SLED_PIN         -1
-#endif
-
 //
 // Limit Switches
 //
diff --git a/Marlin/pins_RAMPS.h b/Marlin/pins_RAMPS.h
index da14a6dab..767e99085 100644
--- a/Marlin/pins_RAMPS.h
+++ b/Marlin/pins_RAMPS.h
@@ -85,8 +85,6 @@
   #define Z_MIN_PROBE_PIN  32
 #endif
 
-#define SLED_PIN           -1
-
 //
 // Steppers
 //
diff --git a/Marlin/pins_SANGUINOLOLU_11.h b/Marlin/pins_SANGUINOLOLU_11.h
index b7315fba7..62d92b61e 100644
--- a/Marlin/pins_SANGUINOLOLU_11.h
+++ b/Marlin/pins_SANGUINOLOLU_11.h
@@ -41,13 +41,6 @@
 #define Y_STOP_PIN         19
 #define Z_STOP_PIN         20
 
-//
-// Z Probe (when not Z_MIN_PIN)
-//
-#if ENABLED(Z_PROBE_SLED)
-  #define SLED_PIN         -1
-#endif
-
 //
 // Steppers
 //
diff --git a/Marlin/pins_SCOOVO_X9H.h b/Marlin/pins_SCOOVO_X9H.h
index dcb36a24a..a5ef15236 100644
--- a/Marlin/pins_SCOOVO_X9H.h
+++ b/Marlin/pins_SCOOVO_X9H.h
@@ -57,8 +57,6 @@
   #define Z_MIN_PROBE_PIN   30
 #endif
 
-#define SLED_PIN -1
-
 //
 // Steppers
 //