diff --git a/nufw.spec b/nufw.spec
index 2745831..d65744f 100644
--- a/nufw.spec
+++ b/nufw.spec
@@ -95,6 +95,7 @@ in NuFW.
 Summary: Nufw client using pam credentials
 Group: System Environment/Libraries
 BuildRequires: chrpath
+Conflicts: filesystem < 3
 
 %description -n pam_nufw
 pam_nufw is a PAM module able to integrate with the PAM stack.
@@ -186,8 +187,8 @@ popd
 # fix postgresql name
 perl -pi -e "s|postgresql|pgsql|" ./src/nuauth/modules/log_pgsql/Makefile*
 
-perl -pi -e 's|^(modulesdir\s*=\s*/)lib|$1%_lib|' ./src/clients/pam_nufw/Makefile*
-perl -pi -e 's|(\@modulesdir\s*=\s*/)lib|$1%_lib|' ./src/clients/pam_nufw/Makefile*
+perl -pi -e 's|^(modulesdir\s*=\s*)/lib|$1%_libdir|' ./src/clients/pam_nufw/Makefile*
+perl -pi -e 's|(\@modulesdir\s*=\s*)/lib|$1%_libdir|' ./src/clients/pam_nufw/Makefile*
 
 # fix nuauth-utils build
 perl -pi -e 's|\$\(prefix\)|\%\{buildroot\}|' ./scripts/nuauth_command/Makefile*
@@ -225,7 +226,7 @@ mkdir -p %{buildroot}/%{_localstatedir}/lib/nuauth
 mkdir -p %{buildroot}/%{_localstatedir}/run/nuauth
 # clean useless files
 rm -f %{buildroot}/%{_libdir}/nuauth/modules/*.{a,la}
-rm -f %{buildroot}/%{_lib}/security/*{a,la}
+rm -f %{buildroot}/%{_libdir}/security/*{a,la}
 rm -f %{buildroot}/%{_libdir}/libnobuffer*
 
 mkdir -p %{buildroot}/%_initrddir/
@@ -344,7 +345,7 @@ fi
 %files -n pam_nufw
 %defattr(-, root, root, -)
 %doc doc/README.pam_nufw
-/%{_lib}/security/pam_nufw.so
+%{_libdir}/security/pam_nufw.so
 
 %files -n nuauth-auth-ldap
 %defattr(-, root, root, -)