diff --git a/wimax.spec b/wimax.spec
index 12e1c57..0fd5057 100644
--- a/wimax.spec
+++ b/wimax.spec
@@ -25,6 +25,8 @@ BuildRequires: zlib-devel
 BuildRequires: libeap-devel
 BuildRequires: chrpath
 ExcludeArch: s390 s390x
+Conflicts:      udev < 176
+Conflicts:      filesystem < 3
 
 %description
 User space daemon for the Intel 2400m Wireless WiMAX Link.
@@ -69,8 +71,8 @@ chrpath --delete %{buildroot}%{_bindir}/wimaxd
 
 mv %{buildroot}/etc/logrotate.d/wimax.conf %{buildroot}/etc/logrotate.d/wimax
 
-mkdir -p %{buildroot}/lib/udev
-mv %{buildroot}/etc/udev/rules.d %{buildroot}/lib/udev
+mkdir -p %{buildroot}%{_prefix}/lib/udev
+mv %{buildroot}/etc/udev/rules.d %{buildroot}%{_prefix}/lib/udev
 
 %post libs -p /sbin/ldconfig
 
@@ -82,7 +84,7 @@ mv %{buildroot}/etc/udev/rules.d %{buildroot}/lib/udev
 %config /etc/logrotate.d/wimax
 %config /etc/modprobe.d/i2400m.conf
 %config /etc/wimax/config.xml
-/lib/udev/rules.d/iwmxsdk.rules
+%{_prefix}/lib/udev/rules.d/iwmxsdk.rules
 %{_bindir}/wimaxcu
 %{_bindir}/wimaxd
 %{_bindir}/wimax_monitor