1 files changed, 1 insertions, 1 deletions

diff --git a/src/xterm.c b/src/xterm.c
index 0c7cac6d0d0..4996f6e4dfe 100644
--- a/src/xterm.c
+++ b/src/xterm.c
@@ -6908,7 +6908,7 @@ note_mouse_highlight (f, x, y)
                 if (NILP (b))
                   b = make_number (0);
                 if (NILP (e))
-                  e = make_number (XSTRING (object)->size) - 1;
+                  e = make_number (XSTRING (object)->size - 1);
                 fast_find_string_pos (w, XINT (b), object,
                                       &dpyinfo->mouse_face_beg_col,
                                       &dpyinfo->mouse_face_beg_row,