index 85819882..f69d5f6d 100644
--- a/generic/proof-site.el
+++ b/generic/proof-site.el
@@ -118,13 +118,13 @@ Falls back to consulting the environment variable `PROOFGENERAL_HOME' if
 proof-site.el couldn't know where it was executed from.")
 
 (defcustom proof-images-directory
-  (expand-file-name "images/" proof-home-directory)
+  (expand-file-name "@SITEETC@/images/")
     "Where Proof General image files are installed.  Ends with slash."
   :type 'directory
   :group 'proof-general-internals)
 
 (defcustom proof-info-directory
-  (expand-file-name "doc/" proof-home-directory)
+  (expand-file-name "@EPREFIX@/usr/share/info/")
   "Where Proof General Info files are installed.  Ends with slash."
   :type 'directory
   :group 'proof-general-internals)