diff --git a/src/osx/iphone/window.mm b/src/osx/iphone/window.mm
index 0419937f2b..be5bf2bc60 100644
--- a/src/osx/iphone/window.mm
+++ b/src/osx/iphone/window.mm
@@ -595,7 +595,10 @@ void wxWidgetIPhoneImpl::SetControlSize( wxWindowVariant variant )
 
 float wxWidgetIPhoneImpl::GetContentScaleFactor() const 
 {
-    return [m_osxView contentScaleFactor];
+    if ( [m_osxView respondsToSelector:@selector(contentScaleFactor) ])
+        return [m_osxView contentScaleFactor];
+    else 
+        return 1.0;
 }
 
 void wxWidgetIPhoneImpl::SetFont( const wxFont & font , const wxColour& foreground , long windowStyle, bool ignoreBlack )