diff --git a/src/widgets/Ruler.cpp b/src/widgets/Ruler.cpp
index 97ba09411..238ee814e 100644
--- a/src/widgets/Ruler.cpp
+++ b/src/widgets/Ruler.cpp
@@ -1758,6 +1758,12 @@ AdornedRulerPanel::~AdornedRulerPanel()
                         wxCommandEventHandler(AdornedRulerPanel::OnCapture),
                         NULL,
                         this);
+
+   if (mBack)
+   {
+      mBackDC.SelectObject(wxNullBitmap);
+      delete mBack;
+   }
 }
 
 void AdornedRulerPanel::UpdatePrefs()