diff --git a/sidebar/package/contents/ui/CategoriesPage.qml b/sidebar/package/contents/ui/CategoriesPage.qml
--- a/sidebar/package/contents/ui/CategoriesPage.qml
+++ b/sidebar/package/contents/ui/CategoriesPage.qml
@@ -57,6 +57,8 @@
                 focus: true
                 Layout.minimumHeight: Layout.maximumHeight
                 Layout.maximumHeight: Kirigami.Units.iconSizes.smallMedium + Kirigami.Units.smallSpacing * 2
+                Layout.leftMargin: LayoutMirroring.enabled ? Kirigami.Units.smallSpacing / 2 : 0
+                Layout.rightMargin: LayoutMirroring.enabled ? 0 : Kirigami.Units.smallSpacing / 2
                 Layout.fillWidth: true
                 placeholderText: i18n("Search...")
                 onTextChanged: {