diff --git a/src/widgets/pageview.cpp b/src/widgets/pageview.cpp
--- a/src/widgets/pageview.cpp
+++ b/src/widgets/pageview.cpp
@@ -352,19 +352,17 @@
     if (currentIndexes.isEmpty())
         return;
 
-    QString text;
-    if (currentIndexes.size() > 1) {
-        bool hasDescendants = false;
-        foreach (const QModelIndex &currentIndex, currentIndexes) {
-            if (!currentIndex.isValid())
-                continue;
-
-            if (currentIndex.model()->rowCount(currentIndex) > 0) {
-                hasDescendants = true;
-                break;
-            }
+    auto indexHasChildren = [](QModelIndex index) {
+        if (const QAbstractProxyModel *proxy = qobject_cast<const QAbstractProxyModel *>(index.model())) {
+            index = proxy->mapToSource(index);
         }
+        return index.model()->rowCount(index) > 0;
+    };
 
+    QString text;
+    if (currentIndexes.size() > 1) {
+        const bool hasDescendants = std::any_of(currentIndexes.constBegin(), currentIndexes.constEnd(), [&](const QModelIndex &currentIndex) {
+            return currentIndex.isValid() && indexHasChildren(currentIndex); });
         if (hasDescendants)
             text = i18n("Do you really want to delete the selected items and their children?");
         else
@@ -375,7 +373,7 @@
         if (!currentIndex.isValid())
             return;
 
-        if (currentIndex.model()->rowCount(currentIndex) > 0)
+        if (indexHasChildren(currentIndex))
             text = i18n("Do you really want to delete the selected task and all its children?");
     }
 
diff --git a/tests/units/widgets/pageviewtest.cpp b/tests/units/widgets/pageviewtest.cpp
--- a/tests/units/widgets/pageviewtest.cpp
+++ b/tests/units/widgets/pageviewtest.cpp
@@ -24,6 +24,7 @@
 #include <testlib/qtest_gui_zanshin.h>
 
 #include <QAbstractItemModel>
+#include <QSortFilterProxyModel>
 #include <QAction>
 #include <QHeaderView>
 #include <QLayout>
@@ -57,8 +58,16 @@
     Q_OBJECT
     Q_PROPERTY(QAbstractItemModel* centralListModel READ centralListModel)
 public:
+    void setProxyModel(QAbstractProxyModel *proxy)
+    {
+        proxyModel = proxy;
+        proxyModel->setSourceModel(&itemModel);
+    }
+
     QAbstractItemModel *centralListModel()
     {
+        if (proxyModel)
+            return proxyModel;
         return &itemModel;
     }
 
@@ -114,6 +123,7 @@
     QList<QPersistentModelIndex> removedIndices;
     QList<QPersistentModelIndex> promotedIndices;
     QStandardItemModel itemModel;
+    QAbstractProxyModel *proxyModel = nullptr;
 };
 
 class RunningTaskModelStub : public Presentation::RunningTaskModelInterface
@@ -616,6 +626,45 @@
         QCOMPARE(stubPageModel.removedIndices.first(), index);
     }
 
+    void shouldDisplayNotificationWhenHittingTheDeleteKeyOnAnItemWithHiddenChildren()
+    {
+        // GIVEN
+        PageModelStub stubPageModel;
+        Q_ASSERT(stubPageModel.property("centralListModel").canConvert<QAbstractItemModel*>());
+        stubPageModel.addStubItems(QStringList() << QStringLiteral("A") << QStringLiteral("B"));
+        QStandardItem *parentIndex = stubPageModel.itemModel.item(1, 0);
+        stubPageModel.addStubItem(QStringLiteral("C"), parentIndex);
+
+        QSortFilterProxyModel proxyModel;
+        stubPageModel.setProxyModel(&proxyModel);
+        proxyModel.setFilterFixedString("B");
+
+        QPersistentModelIndex index = stubPageModel.centralListModel()->index(0, 0);
+        QCOMPARE(index.data().toString(), QLatin1String("B"));
+        Widgets::PageView page;
+        page.setModel(&stubPageModel);
+        auto msgbox = MessageBoxStub::Ptr::create();
+        page.setMessageBoxInterface(msgbox);
+
+        QTreeView *centralView = page.findChild<QTreeView*>(QStringLiteral("centralView"));
+        centralView->selectionModel()->setCurrentIndex(index, QItemSelectionModel::ClearAndSelect);
+        QVERIFY(centralView->selectionModel()->currentIndex().isValid());
+        centralView->setFocus();
+
+        // Needed for shortcuts to work
+        page.show();
+        QVERIFY(QTest::qWaitForWindowShown(&page));
+        QTest::qWait(100);
+
+        // WHEN
+        QTest::keyPress(centralView, Qt::Key_Delete);
+
+        // THEN
+        QVERIFY(msgbox->called());
+        QCOMPARE(stubPageModel.removedIndices.size(), 1);
+        QCOMPARE(stubPageModel.removedIndices.first(), index);
+    }
+
     void shouldDeleteItemsWhenHittingTheDeleteKey()
     {
         // GIVEN