diff --git a/Marlin/planner.h b/Marlin/planner.h
index 40bcf9dae..3ef15ee21 100644
--- a/Marlin/planner.h
+++ b/Marlin/planner.h
@@ -393,7 +393,7 @@ class Planner {
 
     #if ENABLED(ENSURE_SMOOTH_MOVES)
       static bool long_move() {
-          if (blocks_queued()) {
+          if (blocks_queued() && block_buffer_runtime_us) {
             return block_buffer_runtime_us > (LCD_UPDATE_THRESHOLD) * 1000UL + (MIN_BLOCK_TIME) * 3000UL;
           }
           else