1 files changed, 4 insertions, 2 deletions

diff --git a/lisp/tooltip.el b/lisp/tooltip.el
index 367114b83f5..c011f1b01bc 100644
--- a/lisp/tooltip.el
+++ b/lisp/tooltip.el
@@ -119,7 +119,8 @@ the value of `tooltip-y-offset' is ignored."
 (defcustom tooltip-frame-parameters
   '((name . "tooltip")
     (internal-border-width . 2)
-    (border-width . 1))
+    (border-width . 1)
+    (no-special-glyphs . t))
   "Frame parameters used for tooltips.
 
 If `left' or `top' parameters are included, they specify the absolute
@@ -130,7 +131,8 @@ of the `tooltip' face are used instead."
   :type '(repeat (cons :format "%v"
                        (symbol :tag "Parameter")
                        (sexp :tag "Value")))
-  :group 'tooltip)
+  :group 'tooltip
+  :version "26.1")
 
 (defface tooltip
   '((((class color))