diff --git a/lisp/progmodes/flymake.el b/lisp/progmodes/flymake.el
index 3af410683a7..f03b9ab56a0 100644
--- a/lisp/progmodes/flymake.el
+++ b/lisp/progmodes/flymake.el
@@ -447,7 +447,7 @@ verify FILTER, a function, and sort them by COMPARE (using KEY)."
   :package-version '(Flymake . "1.3.4"))
 
 (defface flymake-end-of-line-diagnostics-face
-  '((t :height 0.7 :box (:line-width 1)))
+  '((t :height 0.85 :box (:line-width -1)))
   "Face used for end-of-line diagnostics.
 See variable `flymake-show-diagnostics-at-end-of-line'."
   :package-version '(Flymake . "1.3.5"))