diff --git a/lib/Slic3r/GUI/PreviewCanvas.pm b/lib/Slic3r/GUI/PreviewCanvas.pm
index 615e29b155..88dc139761 100644
--- a/lib/Slic3r/GUI/PreviewCanvas.pm
+++ b/lib/Slic3r/GUI/PreviewCanvas.pm
@@ -94,9 +94,6 @@ sub Resize {
  
 sub DESTROY {
     my $self = shift;
- 
-    $self->timer->Stop;
-    $self->timer(undef);
 }
  
 sub InitGL {