diff --git a/src/dokuwiki.scm b/src/dokuwiki.scm
index b28eef1..3c86786 100644
--- a/src/dokuwiki.scm
+++ b/src/dokuwiki.scm
@@ -71,7 +71,9 @@
  (define (load-dokuwiki-users-auth fname)
    (handle-exceptions
     exn
-    '()
+    (let ()
+      (log-warning "DokuWiki: cannot open ~A" fname)
+      '())
     (with-input-from-file fname
       parse-dokuwiki-users-auth)))