diff --git a/mksh.spec b/mksh.spec
index 9b04cf1..36860b4 100644
--- a/mksh.spec
+++ b/mksh.spec
@@ -1,5 +1,3 @@
-%define _bindir   /bin
-
 Summary:          MirBSD enhanced version of the Korn Shell
 Name:             mksh
 Version:          40b
@@ -10,6 +8,7 @@ Group:            System Environment/Shells
 URL:              http://www.mirbsd.de/%{name}.htm
 Source0:          http://www.mirbsd.org/MirOS/dist/mir/%{name}/%{name}-R%{version}.cpio.gz
 Source1:          dot-mkshrc
+Conflicts:        filesystem < 3
 Requires(post):   grep
 Requires(postun): sed
 BuildRequires:    util-linux, ed