diff --git a/src/bonsai/bonsai/bim/module/drawing/operator.py b/src/bonsai/bonsai/bim/module/drawing/operator.py
index 67d4a465ed..9cbc774a5b 100644
--- a/src/bonsai/bonsai/bim/module/drawing/operator.py
+++ b/src/bonsai/bonsai/bim/module/drawing/operator.py
@@ -1169,6 +1169,7 @@ class CreateDrawing(bpy.types.Operator):
         self.serialiser.setWithoutStoreys(True)
         self.serialiser.setPolygonal(True)
         self.serialiser.setUseHlrPoly(True)
+        self.serialiser.setOnlyValid(True)
         # Objects with more than these edges are rendered as wireframe instead of HLR for optimisation
         self.serialiser.setProfileThreshold(10000)
         self.serialiser.setUseNamespace(True)
diff --git a/src/bonsai/scripts/standalone_drawer.py b/src/bonsai/scripts/standalone_drawer.py
index 9fee0de4d8..5c3b52ff76 100644
--- a/src/bonsai/scripts/standalone_drawer.py
+++ b/src/bonsai/scripts/standalone_drawer.py
@@ -157,6 +157,7 @@ class Drawer:
         self.serialiser.setWithoutStoreys(True)
         self.serialiser.setPolygonal(True)
         self.serialiser.setUseHlrPoly(True)
+        self.serialiser.setOnlyValid(True)
         # Objects with more than these edges are rendered as wireframe instead of HLR for optimisation
         self.serialiser.setProfileThreshold(10000)
         self.serialiser.setUseNamespace(True)