diff --git a/Marlin/src/lcd/extui/ui_api.cpp b/Marlin/src/lcd/extui/ui_api.cpp
index f44e8bf72032..bfcbc39d7bf0 100644
--- a/Marlin/src/lcd/extui/ui_api.cpp
+++ b/Marlin/src/lcd/extui/ui_api.cpp
@@ -861,16 +861,16 @@ namespace ExtUI {
   #endif
 
   #if ENABLED(BACKLASH_GCODE)
-    float getAxisBacklash_mm(const axis_t axis)       { return backlash.distance_mm[axis]; }
+    float getAxisBacklash_mm(const axis_t axis)       { return backlash.get_distance_mm((AxisEnum)axis); }
     void setAxisBacklash_mm(const_float_t value, const axis_t axis)
-                                                      { backlash.distance_mm[axis] = constrain(value,0,5); }
+                                                      { backlash.set_distance_mm((AxisEnum)axis, constrain(value,0,5)); }
 
-    float getBacklashCorrection_percent()             { return ui8_to_percent(backlash.correction); }
-    void setBacklashCorrection_percent(const_float_t value) { backlash.correction = map(constrain(value, 0, 100), 0, 100, 0, 255); }
+    float getBacklashCorrection_percent()             { return backlash.get_correction() * 100.0f; }
+    void setBacklashCorrection_percent(const_float_t value) { backlash.set_correction(constrain(value, 0, 100) / 100.0f); }
 
     #ifdef BACKLASH_SMOOTHING_MM
-      float getBacklashSmoothing_mm()                 { return backlash.smoothing_mm; }
-      void setBacklashSmoothing_mm(const_float_t value) { backlash.smoothing_mm = constrain(value, 0, 999); }
+      float getBacklashSmoothing_mm()                 { return backlash.get_smoothing_mm(); }
+      void setBacklashSmoothing_mm(const_float_t value) { backlash.set_smoothing_mm(constrain(value, 0, 999)); }
     #endif
   #endif