diff --git a/src/effects/private/qml/WindowHeap.qml b/src/effects/private/qml/WindowHeap.qml
index e445af4b72..3bc55f870e 100644
--- a/src/effects/private/qml/WindowHeap.qml
+++ b/src/effects/private/qml/WindowHeap.qml
@@ -128,6 +128,7 @@ FocusScope {
 
         anchors.fill: parent
         anchors.margins: heap.padding
+        fillGaps: true
         spacing: PlasmaCore.Units.smallSpacing * 5
 
         Repeater {