diff --git a/src/osx/cocoa/taskbar.mm b/src/osx/cocoa/taskbar.mm
index 04c574dc82..b3966549d5 100644
--- a/src/osx/cocoa/taskbar.mm
+++ b/src/osx/cocoa/taskbar.mm
@@ -40,6 +40,8 @@ class wxTaskBarIconWindow : public wxTopLevelWindow
 public:
     wxTaskBarIconWindow(wxTaskBarIconImpl *impl);
 
+    double GetContentScaleFactor() const wxOVERRIDE;
+
     void OnMenuEvent(wxCommandEvent& event);
     void OnUpdateUIEvent(wxUpdateUIEvent& event);
     
@@ -426,6 +428,13 @@ wxTaskBarIconWindow::wxTaskBarIconWindow(wxTaskBarIconImpl *impl)
 {
 }
 
+double wxTaskBarIconWindow::GetContentScaleFactor() const
+{
+    // We don't have any real window here, so use the main screen scale, which
+    // should be appropriate for dock/status icons.
+    return wxOSXGetMainScreenContentScaleFactor();
+}
+
 void wxTaskBarIconWindow::OnMenuEvent(wxCommandEvent& event)
 {
     m_impl->GetTaskBarIcon()->ProcessEvent(event);