diff --git a/lib/Slic3r/Print.pm b/lib/Slic3r/Print.pm index e30a5ed7f..5bcc4b92a 100644 --- a/lib/Slic3r/Print.pm +++ b/lib/Slic3r/Print.pm @@ -228,7 +228,7 @@ sub init_extruders { # initialize all extruder(s) we need my @used_extruders = ( 0, - (map $self->config->get("${_}_extruder")-1, qw(perimeter infill support_material)), + (map $self->config->get("${_}_extruder")-1, qw(perimeter infill support_material support_material_interface)), (values %extruder_mapping), ); for my $extruder_id (keys %{{ map {$_ => 1} @used_extruders }}) {