diff --git a/elisp/extras.el b/elisp/extras.el
index 4f317c8..56873d0 100644
--- a/elisp/extras.el
+++ b/elisp/extras.el
@@ -2,6 +2,9 @@
 (when (member "Fantasque Sans Mono" (font-family-list))
   (set-face-attribute 'default nil :font "Fantasque Sans Mono-15"))
 
+;; Always use slant for italic, not underline
+'(italic ((t (:slant italic))))
+
 ;; load my packages
 (require 'geiser)
 (require 'ess-site)