diff --git a/include/wx/aui/auibar.h b/include/wx/aui/auibar.h
index 434ed8fc8f..c8abbcebd6 100644
--- a/include/wx/aui/auibar.h
+++ b/include/wx/aui/auibar.h
@@ -642,6 +642,7 @@ protected: // handlers
 
     void OnSize(wxSizeEvent& evt);
     void OnIdle(wxIdleEvent& evt);
+    void OnDPIChanged(wxDPIChangedEvent& evt);
     void OnPaint(wxPaintEvent& evt);
     void OnEraseBackground(wxEraseEvent& evt);
     void OnLeftDown(wxMouseEvent& evt);
diff --git a/src/aui/auibar.cpp b/src/aui/auibar.cpp
index 66a7073396..3705d8b776 100644
--- a/src/aui/auibar.cpp
+++ b/src/aui/auibar.cpp
@@ -825,6 +825,7 @@ static wxOrientation GetOrientation(long style)
 wxBEGIN_EVENT_TABLE(wxAuiToolBar, wxControl)
     EVT_SIZE(wxAuiToolBar::OnSize)
     EVT_IDLE(wxAuiToolBar::OnIdle)
+    EVT_DPI_CHANGED(wxAuiToolBar::OnDPIChanged)
     EVT_ERASE_BACKGROUND(wxAuiToolBar::OnEraseBackground)
     EVT_PAINT(wxAuiToolBar::OnPaint)
     EVT_LEFT_DOWN(wxAuiToolBar::OnLeftDown)
@@ -2383,6 +2384,11 @@ void wxAuiToolBar::OnIdle(wxIdleEvent& evt)
     evt.Skip();
 }
 
+void wxAuiToolBar::OnDPIChanged(wxDPIChangedEvent& WXUNUSED(event))
+{
+    Realize();
+}
+
 void wxAuiToolBar::UpdateWindowUI(long flags)
 {
     if ( flags & wxUPDATE_UI_FROMIDLE )