Tweak to stepper advance e_steps update

8 years ago · d07a913f21
1 changed files with 1 additions and 1 deletions
--- a/Marlin/stepper.cpp
+++ b/Marlin/stepper.cpp
@ -426,7 +426,7 @@ void Stepper::isr() {
          counter_E -= current_block->step_event_count;
          #if DISABLED(MIXING_EXTRUDER)
            // Don't step E here for mixing extruder
-            e_steps[TOOL_E_INDEX] += motor_direction(E_AXIS) ? -1 : 1;
+            motor_direction(E_AXIS) ? --e_steps[TOOL_E_INDEX] : ++e_steps[TOOL_E_INDEX];
          #endif
        }