diff --git a/Marlin/stepper.cpp b/Marlin/stepper.cpp
index 9cbb794aa642765a40cf5312bd82bbffe34d2c1b..cf7d1c23aa5721e4ef80f65bbd192d2bc267fee1 100644
--- a/Marlin/stepper.cpp
+++ b/Marlin/stepper.cpp
@@ -346,8 +346,6 @@ ISR(TIMER1_COMPA_vect) {
 
 void Stepper::isr() {
 
-  static uint32_t step_remaining = 0;
-
   uint16_t ocr_val;
 
   #define ENDSTOP_NOMINAL_OCR_VAL 3000    // check endstops every 1.5ms to guarantee two stepper ISRs within 5ms for BLTouch
@@ -364,6 +362,7 @@ void Stepper::isr() {
   #if ENABLED(ENDSTOP_INTERRUPTS_FEATURE)
     #define SPLIT(L) _SPLIT(L)
   #else                 // sample endstops in between step pulses
+    static uint32_t step_remaining = 0;
     #define SPLIT(L) do { \
       _SPLIT(L); \
       if (ENDSTOPS_ENABLED && L > ENDSTOP_NOMINAL_OCR_VAL) { \
@@ -391,7 +390,7 @@ void Stepper::isr() {
       _ENABLE_ISRs(); // re-enable ISRs
       return;
     }
-  # endif
+  #endif
 
   if (cleaning_buffer_counter) {
     --cleaning_buffer_counter;