1 files changed, 2 insertions, 0 deletions

diff --git a/src/xterm.c b/src/xterm.c
index 906709fe99e..1f7f3b5a9e7 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -394,6 +394,7 @@ static
 XTframe_up_to_date (f)
      FRAME_PTR f;
 {
+  BLOCK_INPUT;
   if (FRAME_X_DISPLAY_INFO (f)->mouse_face_deferred_gc
       || f == FRAME_X_DISPLAY_INFO (f)->mouse_face_mouse_frame)
     {
@@ -402,6 +403,7 @@ XTframe_up_to_date (f)
                             FRAME_X_DISPLAY_INFO (f)->mouse_face_mouse_y);
       FRAME_X_DISPLAY_INFO (f)->mouse_face_deferred_gc = 0;
     }
+  UNBLOCK_INPUT;
 }
 
 /* External interface to control of standout mode.