diff --git a/resources/qml/SidebarSimple.qml b/resources/qml/SidebarSimple.qml
index db965d3aab..620b8e29ca 100644
--- a/resources/qml/SidebarSimple.qml
+++ b/resources/qml/SidebarSimple.qml
@@ -307,6 +307,7 @@ Item
             model: extruderModel
             anchors.top: parent.top
             anchors.left: supportExtruderLabel.right
+            style: UM.Theme.styles.combobox
         }
 
         Label {
@@ -325,6 +326,7 @@ Item
             anchors.top: mainExtruderCombobox.bottom
             anchors.topMargin: UM.Theme.getSize("default_margin").height
             anchors.left: supportExtruderLabel.right
+            style: UM.Theme.styles.combobox
         }
 
         ListModel {
diff --git a/resources/themes/cura/styles.qml b/resources/themes/cura/styles.qml
index 5c88645330..e536c38ba7 100644
--- a/resources/themes/cura/styles.qml
+++ b/resources/themes/cura/styles.qml
@@ -309,6 +309,52 @@ QtObject {
         unitFont: Theme.getFont("default");
     }
 
+    property Component combobox: Component {
+        ComboBoxStyle {
+            background: Rectangle {
+                implicitHeight: UM.Theme.getSize("setting_control").height;
+                implicitWidth: UM.Theme.getSize("setting_control").width;
+
+                color: control.hovered ? Theme.getColor("setting_control_highlight") : Theme.getColor("setting_control");
+                Behavior on color { ColorAnimation { duration: 50; } }
+
+                border.width: Theme.getSize("default_lining").width;
+                border.color: control.hovered ? Theme.getColor("setting_control_border_highlight") : Theme.getColor("setting_control_border");
+            }
+            label: Item {
+                Label {
+                    anchors.left: parent.left;
+                    anchors.leftMargin: Theme.getSize("default_lining").width
+                    anchors.right: downArrow.left;
+                    anchors.rightMargin: Theme.getSize("default_lining").width;
+                    anchors.verticalCenter: parent.verticalCenter;
+
+                    text: control.currentText;
+                    font: UM.Theme.getFont("default");
+                    color: !enabled ? Theme.getColor("setting_control_disabled_text") : Theme.getColor("setting_control_text");
+
+                    elide: Text.ElideRight;
+                    verticalAlignment: Text.AlignVCenter;
+                }
+
+                UM.RecolorImage {
+                    id: downArrow
+                    anchors.right: parent.right;
+                    anchors.rightMargin: Theme.getSize("default_lining").width * 2;
+                    anchors.verticalCenter: parent.verticalCenter;
+
+                    source: UM.Theme.getIcon("arrow_bottom")
+                    width: UM.Theme.getSize("standard_arrow").width
+                    height: UM.Theme.getSize("standard_arrow").height
+                    sourceSize.width: width + 5
+                    sourceSize.height: width + 5
+
+                    color: Theme.getColor("setting_control_text");
+                }
+            }
+        }
+    }
+
     property Component checkbox: Component {
         CheckBoxStyle {
             background: Item { }