diff --git a/src/widgets/Ruler.cpp b/src/widgets/Ruler.cpp
index ef80f0023..db55268b5 100644
--- a/src/widgets/Ruler.cpp
+++ b/src/widgets/Ruler.cpp
@@ -1956,6 +1956,9 @@ AdornedRulerPanel::AdornedRulerPanel(AudacityProject* parent,
 , mProject(parent)
 , mViewInfo(viewinfo)
 {
+   for (auto &button : mButtons)
+      button = nullptr;
+
    ReCreateButtons();
 
    SetLabel( _("Timeline") );
diff --git a/src/widgets/Ruler.h b/src/widgets/Ruler.h
index 3be39e59d..cc5910ad1 100644
--- a/src/widgets/Ruler.h
+++ b/src/widgets/Ruler.h
@@ -446,7 +446,7 @@ private:
 
    friend QuickPlayRulerOverlay;
 
-   wxWindow *mButtons[1] { {} };
+   wxWindow *mButtons[1];
    bool mNeedButtonUpdate { true };
 };