diff --git a/ReinforcementDrawing/MainReinforcementDrawingDimensioning.py b/ReinforcementDrawing/MainReinforcementDrawingDimensioning.py
index 2bee422..1db4afe 100644
--- a/ReinforcementDrawing/MainReinforcementDrawingDimensioning.py
+++ b/ReinforcementDrawing/MainReinforcementDrawingDimensioning.py
@@ -309,7 +309,7 @@ def setDefaultShapesData(self):
         """This function is used to set default values in "Shapes - Rebars &
         Structure" stacked widget in UI."""
         form = self.shapes_data_widget
-        form.rebars_stroke_width.setText(f"{self.rebars_stroke_width} mm")
+        form.rebars_stroke_width.setText(FreeCAD.Units.Quantity(self.rebars_stroke_width, FreeCAD.Units.Length).UserString)
         if self.rebars_color_style == "Automatic":
             form.rebars_shape_color_radio.setChecked(True)
             form.rebars_custom_color_radio.setChecked(False)
@@ -323,7 +323,7 @@ def setDefaultShapesData(self):
             self.rebars_color[0], self.rebars_color[1], self.rebars_color[2]
         )
         form.rebars_color.setProperty("color", color)
-        form.structure_stroke_width.setText(f"{self.structure_stroke_width} mm")
+        form.structure_stroke_width.setText(FreeCAD.Units.Quantity(self.structure_stroke_width, FreeCAD.Units.Length).UserString)
         if self.structure_color_style == "Automatic":
             form.structure_shape_color_radio.setChecked(True)
             form.structure_color_none.setChecked(False)
@@ -397,7 +397,7 @@ def setDefaultDimensionLabelsLinesData(self):
             self.dimension_text_color[2],
         )
         form.dimension_text_color.setProperty("color", color)
-        form.dimension_stroke_width.setText(f"{self.dimension_stroke_width} mm")
+        form.dimension_stroke_width.setText(FreeCAD.Units.Quantity(self.dimension_stroke_width, FreeCAD.Units.Length).UserString)
         if form.dimension_line_style.findText(self.dimension_line_style) == -1:
             form.dimension_line_style.setCurrentIndex(0)
         else: