1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Slic3r.pm b/lib/Slic3r.pm
index 0c6c81bb5..46627311f 100644
--- a/lib/Slic3r.pm
+++ b/lib/Slic3r.pm
@@ -167,6 +167,7 @@ sub thread_cleanup {
     *Slic3r::GUI::PresetHints::DESTROY      = sub {};
     *Slic3r::GUI::TabIface::DESTROY         = sub {};
     *Slic3r::OctoPrint::DESTROY             = sub {};
+    *Slic3r::Duet::DESTROY                  = sub {};
     *Slic3r::PresetUpdater::DESTROY         = sub {};
     return undef;  # this prevents a "Scalars leaked" warning
 }