1 files changed, 1 insertions, 1 deletions

diff --git a/src/xdisp.c b/src/xdisp.c
index 5e6d5277a2b..b4ebd59563b 100644
--- a/src/xdisp.c
+++ b/src/xdisp.c
@@ -22387,7 +22387,7 @@ note_mouse_highlight (f, x, y)
   if (part == ON_VERTICAL_BORDER)
     {
       cursor = FRAME_X_OUTPUT (f)->horizontal_drag_cursor;
-      help_echo_string = make_string ("drag-mouse-1: resize", 20);
+      help_echo_string = build_string ("drag-mouse-1: resize");
     }
   else if (part == ON_LEFT_FRINGE || part == ON_RIGHT_FRINGE
            || part == ON_SCROLL_BAR)