diff --git a/Marlin/src/module/stepper.cpp b/Marlin/src/module/stepper.cpp
index 32e97c2a06..790b118c6d 100644
--- a/Marlin/src/module/stepper.cpp
+++ b/Marlin/src/module/stepper.cpp
@@ -3466,7 +3466,7 @@ void Stepper::report_positions() {
     #if HAS_Z_AXIS
       // Z is handled differently to update the stepper
       // counts (needed by Marlin for bed level probing).
-      const bool z_dir = !TEST(command, FT_BIT_DIR_Z),
+      const bool z_dir = TEST(command, FT_BIT_DIR_Z),
                 z_step = TEST(command, FT_BIT_STEP_Z);
     #endif