diff --git a/plugins/3MFReader/ThreeMFReader.py b/plugins/3MFReader/ThreeMFReader.py
index 89fa5e3e88..ea3ca30118 100644
--- a/plugins/3MFReader/ThreeMFReader.py
+++ b/plugins/3MFReader/ThreeMFReader.py
@@ -71,7 +71,7 @@ class ThreeMFReader(MeshReader):
                 rotation.setByRotationAxis(-0.5 * math.pi, Vector(1, 0, 0))
 
                 # TODO: We currently do not check for normals and simply recalculate them.
-                mesh_builder.calculateNormals(flip = True)
+                mesh_builder.calculateNormals()
                 mesh_builder.setFileName(file_name)
                 node.setMeshData(mesh_builder.build().getTransformed(rotation))
                 node.setSelectable(True)