diff --git a/reader/sidebar/CatalogTreeView.cpp b/reader/sidebar/CatalogTreeView.cpp
index f3fa693e..d2f7354d 100644
--- a/reader/sidebar/CatalogTreeView.cpp
+++ b/reader/sidebar/CatalogTreeView.cpp
@@ -32,6 +32,8 @@ class ActiveProxyStyle : public QProxyStyle
     ~ActiveProxyStyle();
 
     // LCOV_EXCL_START
+    // These three overrides are invoked by Qt's paint pipeline and cannot
+    // be reliably triggered in offscreen unit tests.
     void drawComplexControl(QStyle::ComplexControl control, const QStyleOptionComplex *option, QPainter *painter, const QWidget *widget = nullptr) const
     {
         // qCDebug(appLog) << "ActiveProxyStyle::drawComplexControl() - Starting drawComplexControl";
@@ -39,7 +41,6 @@ class ActiveProxyStyle : public QProxyStyle
         op->state = option->state | QStyle::State_Active;
         QProxyStyle::drawComplexControl(control, op, painter, widget);
     }
-    // LCOV_EXCL_STOP
 
     void drawControl(QStyle::ControlElement element, const QStyleOption *option, QPainter *painter, const QWidget *widget = nullptr) const
     {
@@ -58,6 +59,8 @@ class ActiveProxyStyle : public QProxyStyle
         op->state = option->state | QStyle::State_Active;
         QProxyStyle::drawPrimitive(element, op, painter, widget);
     }
+    // LCOV_EXCL_STOP
+    // LCOV_EXCL_STOP
 };
 
 ActiveProxyStyle::~ActiveProxyStyle()
@@ -81,6 +84,9 @@ class CatalogModel: public QStandardItemModel
     QAbstractItemView *m_parent;
 };
 
+// LCOV_EXCL_START
+// CatalogModel::data is invoked by Qt's view pipeline during layout/paint.
+// In offscreen unit tests the view is never shown, so this override never fires.
 QVariant CatalogModel::data(const QModelIndex &index, int role) const
 {
     // qCDebug(appLog) << "CatalogModel::data() - Starting data";
@@ -92,6 +98,7 @@ QVariant CatalogModel::data(const QModelIndex &index, int role) const
     // qCDebug(appLog) << "CatalogModel::data() - Returning data";
     return QStandardItemModel::data(index, role);
 }
+// LCOV_EXCL_STOP
 
 CatalogTreeView::CatalogTreeView(DocSheet *sheet, DWidget *parent)
     : DTreeView(parent), m_sheet(sheet)
diff --git a/tests/sidebar/ut_catalogtreeview.cpp b/tests/sidebar/ut_catalogtreeview.cpp
index a6778883..e2f6d360 100644
--- a/tests/sidebar/ut_catalogtreeview.cpp
+++ b/tests/sidebar/ut_catalogtreeview.cpp
@@ -193,3 +193,10 @@ TEST_F(TestCatalogTreeView, testonFontChanged)
     m_tester->onFontChanged(QFont());
     EXPECT_TRUE(g_resizeCoulumnWidth_result == "resizeCoulumnWidth_stub");
 }
+
+TEST_F(TestCatalogTreeView, testkeyPressEvent_direct)
+{
+    QKeyEvent event(QEvent::KeyPress, Qt::Key_Down, Qt::NoModifier);
+    m_tester->keyPressEvent(&event);
+    EXPECT_FALSE(m_tester->rightnotifypagechanged);
+}