diff --git a/interface/wx/richtooltip.h b/interface/wx/richtooltip.h
index 205ba266a0..62f6c4fdb7 100644
--- a/interface/wx/richtooltip.h
+++ b/interface/wx/richtooltip.h
@@ -182,6 +182,8 @@ public:
         window which must be non-@NULL or, if @a rect is non-@NULL, the middle
         of the specified wxRect.
 
+        The coordinates of the @a rect parameter are relative to the given window.
+
         Currently the native MSW implementation is used only if @a win is a
         wxTextCtrl and @a rect is @NULL. This limitation may be removed in the
         future.
diff --git a/src/generic/richtooltipg.cpp b/src/generic/richtooltipg.cpp
index 0c00e24a67..5d08e1261a 100644
--- a/src/generic/richtooltipg.cpp
+++ b/src/generic/richtooltipg.cpp
@@ -239,7 +239,7 @@ public:
         if ( !rect || rect->IsEmpty() )
             pos = GetTipPoint();
         else
-            pos = wxPoint( rect->x + rect->width / 2, rect->y + rect->height / 2 );
+            pos = GetParent()->ClientToScreen( wxPoint( rect->x + rect->width / 2, rect->y + rect->height / 2 ) );
 
         // We want our anchor point to coincide with this position so offset
         // the position of the top left corner passed to Move() accordingly.