diff --git a/lib/Slic3r/GUI/Plater.pm b/lib/Slic3r/GUI/Plater.pm
index 3b74e2a97..ba59114a1 100644
--- a/lib/Slic3r/GUI/Plater.pm
+++ b/lib/Slic3r/GUI/Plater.pm
@@ -761,7 +761,6 @@ sub export_gcode2 {
 
 sub on_export_completed {
     my $self = shift;
-    my ($message) = @_;
     
     $self->{export_thread}->detach if $self->{export_thread};
     $self->{export_thread} = undef;