diff --git a/lib/Slic3r/GUI/Plater.pm b/lib/Slic3r/GUI/Plater.pm
index e21213e2..b55bb81f 100644
--- a/lib/Slic3r/GUI/Plater.pm
+++ b/lib/Slic3r/GUI/Plater.pm
@@ -640,6 +640,8 @@ sub split_object {
     my $new_model = Slic3r::Model->new;
     
     foreach my $mesh (@new_meshes) {
+        $mesh->repair;
+        
         my $model_object = $new_model->add_object(
             input_file              => $current_model_object->input_file,
             config                  => $current_model_object->config->clone,