diff --git a/lib/Slic3r/GUI/Plater/ObjectCutDialog.pm b/lib/Slic3r/GUI/Plater/ObjectCutDialog.pm
index 0b5312b30..7f930c1d0 100644
--- a/lib/Slic3r/GUI/Plater/ObjectCutDialog.pm
+++ b/lib/Slic3r/GUI/Plater/ObjectCutDialog.pm
@@ -244,7 +244,7 @@ sub _update {
             $self->{canvas}->reset_objects;
             $self->{canvas}->load_object($_, undef, undef, [0]) for @objects;
             $self->{canvas}->SetCuttingPlane(
-                $self->{cut_options}{z},
+                $self->{cut_options}{z} / $self->{model_object}->instances->[0]->scaling_factor,
                 [@expolygons],
             );
             $self->{canvas}->update_volumes_colors_by_extruder($self->GetParent->{config});