diff --git a/Libraries/LibGUI/GAbstractButton.cpp b/Libraries/LibGUI/GAbstractButton.cpp
index 6ecd836198..002d7311ae 100644
--- a/Libraries/LibGUI/GAbstractButton.cpp
+++ b/Libraries/LibGUI/GAbstractButton.cpp
@@ -9,6 +9,7 @@ GAbstractButton::GAbstractButton(GWidget* parent)
 GAbstractButton::GAbstractButton(const StringView& text, GWidget* parent)
     : GWidget(parent)
     , m_text(text)
+    , m_auto_repeat_timer(this)
 {
     m_auto_repeat_timer.on_timeout = [this] {
         click();
diff --git a/Libraries/LibGUI/GScrollBar.cpp b/Libraries/LibGUI/GScrollBar.cpp
index 32b31f8985..ce1f2efebf 100644
--- a/Libraries/LibGUI/GScrollBar.cpp
+++ b/Libraries/LibGUI/GScrollBar.cpp
@@ -60,6 +60,7 @@ static CharacterBitmap* s_right_arrow_bitmap;
 GScrollBar::GScrollBar(Orientation orientation, GWidget* parent)
     : GWidget(parent)
     , m_orientation(orientation)
+    , m_automatic_scrolling_timer(this)
 {
     if (!s_up_arrow_bitmap)
         s_up_arrow_bitmap = &CharacterBitmap::create_from_ascii(s_up_arrow_bitmap_data, 9, 9).leak_ref();