diff --git a/busybox.spec b/busybox.spec
index 57e996e..310b7f1 100644
--- a/busybox.spec
+++ b/busybox.spec
@@ -21,12 +21,14 @@ BuildRequires: glibc-static
 # This package used to include a bundled copy of uClibc, but we now
 # use the system copy.
 BuildRequires: uClibc-static
+Conflicts: filesystem < 3
 
 %define debug_package %{nil}
 
 %package petitboot
 Group: System Environment/Shells
 Summary: Version of busybox configured for use with petitboot
+Conflicts: filesystem < 3
 
 %description
 Busybox is a single binary which includes versions of a large number
@@ -89,9 +91,9 @@ cp docs/busybox.1 docs/busybox.petitboot.1
 
 %install
 rm -rf $RPM_BUILD_ROOT
-mkdir -p $RPM_BUILD_ROOT/sbin
-install -m 755 busybox.static $RPM_BUILD_ROOT/sbin/busybox
-install -m 755 busybox.petitboot $RPM_BUILD_ROOT/sbin/busybox.petitboot
+mkdir -p $RPM_BUILD_ROOT/%{_sbindir}
+install -m 755 busybox.static $RPM_BUILD_ROOT/%{_sbindir}/busybox
+install -m 755 busybox.petitboot $RPM_BUILD_ROOT/%{_sbindir}/busybox.petitboot
 mkdir -p $RPM_BUILD_ROOT/%{_mandir}/man1
 install -m 644 docs/busybox.static.1 $RPM_BUILD_ROOT/%{_mandir}/man1/busybox.1
 install -m 644 docs/busybox.petitboot.1 $RPM_BUILD_ROOT/%{_mandir}/man1/busybox.petitboot.1
@@ -102,13 +104,13 @@ rm -rf $RPM_BUILD_ROOT
 %files
 %defattr(-,root,root,-)
 %doc LICENSE README
-/sbin/busybox
+%{_sbindir}/busybox
 %{_mandir}/man1/busybox.1.gz
 
 %files petitboot
 %defattr(-,root,root,-)
 %doc LICENSE README
-/sbin/busybox.petitboot
+%{_sbindir}/busybox.petitboot
 %{_mandir}/man1/busybox.petitboot.1.gz
 
 %changelog