diff --git a/lisp/ox-odt.el b/lisp/ox-odt.el
index 28d60aeef..4f91e4a29 100644
--- a/lisp/ox-odt.el
+++ b/lisp/ox-odt.el
@@ -743,7 +743,7 @@ link's path."
 		:value-type (regexp :tag "Path")))
 
 (defcustom org-odt-inline-image-rules
-  '(("file" . ,(regexp-opt '(".jpeg" ".jpg" ".png" ".gif" ".svg")))
+  `(("file" . ,(regexp-opt '(".jpeg" ".jpg" ".png" ".gif" ".svg")))
     ("attachment" . ,(regexp-opt '(".jpeg" ".jpg" ".png" ".gif" ".svg"))))
   "Rules characterizing image files that can be inlined into ODT.