diff --git a/src/richtext/richtextborderspage.cpp b/src/richtext/richtextborderspage.cpp
index 7acc92af0e..0a9b642ad1 100644
--- a/src/richtext/richtextborderspage.cpp
+++ b/src/richtext/richtextborderspage.cpp
@@ -1344,6 +1344,9 @@ void wxRichTextBorderPreviewCtrl::OnPaint(wxPaintEvent& WXUNUSED(event))
 {
     wxPaintDC dc(this);
 
+    dc.SetBackground(*wxWHITE_BRUSH);
+    dc.Clear();
+
     if (m_attributes)
     {
         wxRect rect = GetClientRect();