diff --git a/adjtimex.spec b/adjtimex.spec
index 0918526..504e6b0 100644
--- a/adjtimex.spec
+++ b/adjtimex.spec
@@ -22,14 +22,13 @@ adjtimex to view kernel time variables.
 make %{?_smp_mflags} VERSION=%{version}
 
 %install
-mkdir -p ${RPM_BUILD_ROOT}/sbin
-mkdir -p ${RPM_BUILD_ROOT}%{_mandir}/man8
-install -m755 adjtimex ${RPM_BUILD_ROOT}/sbin/adjtimex
+mkdir -p ${RPM_BUILD_ROOT}{%{_sbindir},%{_mandir}/man8}
+install -m755 adjtimex ${RPM_BUILD_ROOT}%{_sbindir}/adjtimex
 install -m644 adjtimex.8 ${RPM_BUILD_ROOT}%{_mandir}/man8/adjtimex.8
 
 %files
 %doc README COPYING COPYRIGHT ChangeLog
-/sbin/adjtimex
+%{_sbindir}/adjtimex
 %{_mandir}/man8/adjtimex.8*
 
 %changelog