Index: src/coccigrep.py
--- src/coccigrep.py.orig
+++ src/coccigrep.py
@@ -83,7 +83,7 @@ class CocciRunException(CocciException):
 _CONF_FILES = tuple((path.join(dirname, name_format % 'coccigrep')
     for dirname, name_format in
     ((path.dirname(__file__), '%s.cfg'),
-    ('/etc', '%s'),
+    ('${SYSCONFDIR}', '%s'),
     (path.expanduser('~'), '.%s'),
     (getcwd(), '.%s'))))