diff --git a/.dir-locals.el b/.dir-locals.el
index cbf60b5da1..06c26534d8 100644
--- a/.dir-locals.el
+++ b/.dir-locals.el
@@ -1,6 +1,6 @@
 ;; Per-directory local variables for GNU Emacs 23 and later.
 
-((nil             . ((fill-column . 72)
+((nil             . ((fill-column . 78)
                      (tab-width   .  8)))
  (c-mode          . ((c-file-style . "gnu")))
  (scheme-mode