diff --git a/lib/Slic3r.pm b/lib/Slic3r.pm
index f12ff1a17..4aa7d0d99 100644
--- a/lib/Slic3r.pm
+++ b/lib/Slic3r.pm
@@ -139,6 +139,7 @@ our $skirt_height       = 1;    # layers
 # transform options
 our $scale              = 1;
 our $rotate             = 0;
+our $duplicate_mode     = 'no';
 our $duplicate          = 1;
 our $bed_size           = [200,200];
 our $duplicate_grid     = [1,1];
diff --git a/lib/Slic3r/Config.pm b/lib/Slic3r/Config.pm
index 0116d4aa1..79e81c846 100644
--- a/lib/Slic3r/Config.pm
+++ b/lib/Slic3r/Config.pm
@@ -395,6 +395,13 @@ our $Options = {
         cli     => 'rotate=i',
         type    => 'i',
     },
+    'duplicate_mode' => {
+        label   => 'Duplicate',
+        gui_only => 1,
+        type    => 'select',
+        values  => [qw(no autoarrange grid)],
+        labels  => ['No', 'Autoarrange', 'Grid'],
+    },
     'duplicate' => {
         label    => 'Copies (autoarrange)',
         cli      => 'duplicate=i',
@@ -459,6 +466,7 @@ sub save {
     open my $fh, '>', $file;
     binmode $fh, ':utf8';
     foreach my $opt (sort keys %$Options) {
+        next if $Options->{$opt}{gui_only};
         my $value = get($opt);
         $value = $Options->{$opt}{serialize}->($value) if $Options->{$opt}{serialize};
         printf $fh "%s = %s\n", $opt, $value;
@@ -624,6 +632,8 @@ sub validate {
             || (grep !$_, @$Slic3r::duplicate_grid);
     die "Use either --duplicate or --duplicate-grid (using both doesn't make sense)\n"
         if $Slic3r::duplicate > 1 && $Slic3r::duplicate_grid && (grep $_ && $_ > 1, @$Slic3r::duplicate_grid);
+    $Slic3r::duplicate_mode = 'autoarrange' if $Slic3r::duplicate > 1;
+    $Slic3r::duplicate_mode = 'grid' if grep $_ && $_ > 1, @$Slic3r::duplicate_grid;
     
     # --duplicate-distance
     die "Invalid value for --duplicate-distance\n"
diff --git a/lib/Slic3r/GUI/OptionsGroup.pm b/lib/Slic3r/GUI/OptionsGroup.pm
index 72f868d4d..080127b1d 100644
--- a/lib/Slic3r/GUI/OptionsGroup.pm
+++ b/lib/Slic3r/GUI/OptionsGroup.pm
@@ -8,7 +8,8 @@ use base 'Wx::StaticBoxSizer';
 
 
 # not very elegant, but this solution is temporary waiting for a better GUI
-our @reload_callbacks = ();
+our @reload_callbacks = (\&update_duplicate_controls);
+our %fields = ();  # $key => [$control]
 
 sub new {
     my $class = shift;
@@ -77,9 +78,13 @@ sub new {
                 $x_field->SetValue($value->[0]);
                 $y_field->SetValue($value->[1]);
             };
+            $fields{$opt_key} = [$x_field, $y_field];
         } elsif ($opt->{type} eq 'select') {
             $field = Wx::Choice->new($parent, -1, Wx::wxDefaultPosition, Wx::wxDefaultSize, $opt->{labels} || $opt->{values});
-            EVT_CHOICE($parent, $field, sub { Slic3r::Config->set($opt_key, $opt->{values}[$field->GetSelection]) });
+            EVT_CHOICE($parent, $field, sub {
+                Slic3r::Config->set($opt_key, $opt->{values}[$field->GetSelection]);
+                update_duplicate_controls() if $opt_key eq 'duplicate_mode';
+            });
             push @reload_callbacks, sub {
                 my $value = Slic3r::Config->get($opt_key);
                 $field->SetSelection(grep $opt->{values}[$_] eq $value, 0..$#{$opt->{values}});
@@ -89,6 +94,7 @@ sub new {
             die "Unsupported option type: " . $opt->{type};
         }
         $grid_sizer->Add($_) for $label, $field;
+        $fields{$opt_key} ||= [$field];
     }
     
     $self->Add($grid_sizer, 0, wxEXPAND);
@@ -96,4 +102,12 @@ sub new {
     return $self;
 }
 
+sub update_duplicate_controls {
+    my $value = Slic3r::Config->get('duplicate_mode');
+    $_->Enable($value eq 'autoarrange') for @{$fields{duplicate}};
+    $_->Enable($value eq 'autoarrange') for @{$fields{bed_size}};
+    $_->Enable($value eq 'grid') for @{$fields{duplicate_grid}};
+    $_->Enable($value ne 'no') for @{$fields{duplicate_distance}};
+}
+
 1;
diff --git a/lib/Slic3r/GUI/SkeinPanel.pm b/lib/Slic3r/GUI/SkeinPanel.pm
index 3e83efa33..fbcbaeb32 100644
--- a/lib/Slic3r/GUI/SkeinPanel.pm
+++ b/lib/Slic3r/GUI/SkeinPanel.pm
@@ -61,7 +61,7 @@ sub new {
         },
         transform => {
             title => 'Transform',
-            options => [qw(scale rotate duplicate bed_size duplicate_grid duplicate_distance)],
+            options => [qw(scale rotate duplicate_mode duplicate bed_size duplicate_grid duplicate_distance)],
         },
         gcode => {
             title => 'Custom G-code',
@@ -156,6 +156,8 @@ sub new {
     $self->SetSizer($sizer);
     $self->Layout;
     
+    $_->() for @Slic3r::GUI::OptionsGroup::reload_callbacks;
+    
     return $self;
 }