diff --git a/lib/Slic3r/GUI/SLAPrintOptions.pm b/lib/Slic3r/GUI/SLAPrintOptions.pm
index 042ddc2888..289f4e5a1d 100644
--- a/lib/Slic3r/GUI/SLAPrintOptions.pm
+++ b/lib/Slic3r/GUI/SLAPrintOptions.pm
@@ -12,6 +12,10 @@ sub new {
     $self->config(Slic3r::Config::SLAPrint->new);
     $self->config->apply_dynamic(wxTheApp->{mainframe}->{plater}->config);
     
+    # Set some defaults
+    $self->config->set('infill_extrusion_width', 0.5)  if $self->config->infill_extrusion_width == 0;
+    $self->config->set('perimeter_extrusion_width', 1) if $self->config->perimeter_extrusion_width == 0;
+    
     my $sizer = Wx::BoxSizer->new(wxVERTICAL);
     my $new_optgroup = sub {
         my ($title) = @_;
diff --git a/xs/src/libslic3r/PrintConfig.hpp b/xs/src/libslic3r/PrintConfig.hpp
index 5b42062669..ce5162ffab 100644
--- a/xs/src/libslic3r/PrintConfig.hpp
+++ b/xs/src/libslic3r/PrintConfig.hpp
@@ -574,18 +574,6 @@ class SLAPrintConfig
     ConfigOptionFloat               support_material_spacing;
     ConfigOptionInt                 threads;
     
-    SLAPrintConfig() : StaticPrintConfig() {
-        this->set_defaults();
-        
-        // override some defaults
-        this->fill_density.value                = 100;
-        this->fill_pattern.value                = ipGrid;
-        this->infill_extrusion_width.value      = 0.5;
-        this->infill_extrusion_width.percent    = false;
-        this->perimeter_extrusion_width.value   = 1;
-        this->perimeter_extrusion_width.percent = false;
-    };
-    
     virtual ConfigOption* optptr(const t_config_option_key &opt_key, bool create = false) {
         OPT_PTR(fill_angle);
         OPT_PTR(fill_density);