diff --git a/pisi/atomicoperations.py b/pisi/atomicoperations.py
index a62da97c..32a7f759 100644
--- a/pisi/atomicoperations.py
+++ b/pisi/atomicoperations.py
@@ -293,7 +293,7 @@ class Install(AtomicOperation):
                 assert newf.path == oldf.path
                 if newf.type == 'config' and oldf.type == 'config': # config upgrade
                     fpath = pisi.util.join_path(ctx.config.dest_dir(), oldf.path)
-                    if (os.path.isfile(fpath) or os.path.islink(fpath)) and os.path.exists(fpath) and pisi.util.sha1_file(fpath) == fileinfo.hash:
+                    if (os.path.isfile(fpath) or os.path.islink(fpath) and not os.path.isdir(fpath)) and os.path.exists(fpath) and pisi.util.sha1_file(fpath) == fileinfo.hash:
                         # old config file changed, don't overwrite                        
                         config_changed.append(fpath)
                         if os.path.exists(fpath + '.old'):