diff --git a/lib/Slic3r/GUI/Plater/3DPreview.pm b/lib/Slic3r/GUI/Plater/3DPreview.pm
index 5663054f1..6af777b3a 100644
--- a/lib/Slic3r/GUI/Plater/3DPreview.pm
+++ b/lib/Slic3r/GUI/Plater/3DPreview.pm
@@ -92,11 +92,11 @@ sub new {
         if ($event->HasModifiers) {
             $event->Skip;
         } else {
-            if ($key == ord('U') || $key == WXK_RIGHT) {
+            if ($key == ord('U')) {
                 $slider_high->SetValue($slider_high->GetValue + 1);
                 $slider_low->SetValue($slider_high->GetValue) if ($event->ShiftDown());
                 $self->set_z_idx_high($slider_high->GetValue);
-            } elsif ($key == ord('D') || $key == WXK_LEFT) {
+            } elsif ($key == ord('D')) {
                 $slider_high->SetValue($slider_high->GetValue - 1);
                 $slider_low->SetValue($slider_high->GetValue) if ($event->ShiftDown());
                 $self->set_z_idx_high($slider_high->GetValue);
@@ -112,6 +112,34 @@ sub new {
             }
         }
     });
+    EVT_KEY_DOWN($slider_low, sub {
+        my ($s, $event) = @_;
+        my $key = $event->GetKeyCode;
+        if ($event->HasModifiers) {
+            $event->Skip;
+        } else {
+            if ($key == WXK_LEFT) {
+            } elsif ($key == WXK_RIGHT) {
+                $slider_high->SetFocus;
+            } else {
+                $event->Skip;
+            }
+        }
+    });
+    EVT_KEY_DOWN($slider_high, sub {
+        my ($s, $event) = @_;
+        my $key = $event->GetKeyCode;
+        if ($event->HasModifiers) {
+            $event->Skip;
+        } else {
+            if ($key == WXK_LEFT) {
+                $slider_low->SetFocus;
+            } elsif ($key == WXK_RIGHT) {
+            } else {
+                $event->Skip;
+            }
+        }
+    });
     EVT_CHECKBOX($self, $checkbox_singlelayer, sub {
         $self->single_layer($checkbox_singlelayer->GetValue());
         if ($self->single_layer) {