diff --git a/src/common/combocmn.cpp b/src/common/combocmn.cpp
index faa28ab75a..4663dd5c0f 100644
--- a/src/common/combocmn.cpp
+++ b/src/common/combocmn.cpp
@@ -2277,7 +2277,7 @@ void wxComboCtrlBase::ShowPopup()
     wxSize ctrlSz = GetSize();
 
     screenHeight = wxSystemSettings::GetMetric( wxSYS_SCREEN_Y );
-    scrPos = GetParent()->ClientToScreen(GetPosition());
+    scrPos = GetScreenPosition();
 
     spaceAbove = scrPos.y;
     spaceBelow = screenHeight - spaceAbove - ctrlSz.y;