diff --git a/src/bonsai/bonsai/bim/module/model/decorator.py b/src/bonsai/bonsai/bim/module/model/decorator.py
index 8b9b0cf532..e9046a8fa2 100644
--- a/src/bonsai/bonsai/bim/module/model/decorator.py
+++ b/src/bonsai/bonsai/bim/module/model/decorator.py
@@ -751,7 +751,7 @@ class PolylineDecorator:
 
         # Area highlight
         if polyline_data:
-            _, area = tool.Polyline.validate_input(polyline_data.area, "AREA")
+            area = polyline_data.area.split(" ")[0]
             if area:
                 if float(area) > 0:
                     tris = self.calculate_polygon(polyline_verts)
diff --git a/src/bonsai/bonsai/tool/polyline.py b/src/bonsai/bonsai/tool/polyline.py
index 897a99527c..4a8aab457d 100644
--- a/src/bonsai/bonsai/tool/polyline.py
+++ b/src/bonsai/bonsai/tool/polyline.py
@@ -427,7 +427,7 @@ class Polyline(bonsai.core.tool.Polyline):
 
         FORMULA: "="
 
-        metric: NUMBER "mm²"? "m²"? "mm"? "m"? "°"?
+        metric: NUMBER "mm"? "m"? "°"?
 
         expr: (ADD | SUB | MUL | DIV) dim