1 files changed, 1 insertions, 0 deletions

diff --git a/src/frame.c b/src/frame.c
index 173f84e1cd1..33bb571fe95 100644
--- a/src/frame.c
+++ b/src/frame.c
@@ -2463,6 +2463,7 @@ syms_of_frame ()
   defsubr (&Sframe_width);
   Ffset (intern ("screen-width"), intern ("frame-width"));
   defsubr (&Smouse_position);
+  Ffset (intern ("mouse-pixel-position"), intern ("mouse-position"));
   defsubr (&Sframe_parameters);
   defsubr (&Smodify_frame_parameters);
   defsubr (&Sframe_live_p);