diff --git a/tcsh.spec b/tcsh.spec
index d35c212..6260a36 100644
--- a/tcsh.spec
+++ b/tcsh.spec
@@ -76,20 +76,20 @@ make %{?_smp_mflags} -C nls catalogs
 
 
 %install
-rm -rf $RPM_BUILD_ROOT
+rm -rf ${RPM_BUILD_ROOT}
 mkdir -p ${RPM_BUILD_ROOT}%{_mandir}/man1 ${RPM_BUILD_ROOT}%{_bindir}
-install -p -m 755 tcsh ${RPM_BUILD_ROOT}%{_bindir}/tcsh
+install -p -m 755 tcsh     ${RPM_BUILD_ROOT}%{_bindir}/tcsh
 install -p -m 644 tcsh.man ${RPM_BUILD_ROOT}%{_mandir}/man1/tcsh.1
-ln -sf tcsh ${RPM_BUILD_ROOT}%{_bindir}/csh
-ln -sf tcsh.1 ${RPM_BUILD_ROOT}%{_mandir}/man1/csh.1
+ln -sf tcsh                ${RPM_BUILD_ROOT}%{_bindir}/csh
+ln -sf tcsh.1              ${RPM_BUILD_ROOT}%{_mandir}/man1/csh.1
 
 while read lang language ; do
-	dest=${RPM_BUILD_ROOT}%{_datadir}/locale/$lang/LC_MESSAGES
-	if test -f nls/$language.cat ; then
-		mkdir -p $dest
-		install -p -m 644 nls/$language.cat $dest/tcsh
-		echo "%lang($lang) %{_datadir}/locale/$lang/LC_MESSAGES/tcsh"
-	fi
+  dest=${RPM_BUILD_ROOT}%{_datadir}/locale/$lang/LC_MESSAGES
+  if test -f nls/$language.cat ; then
+    mkdir -p $dest
+    install -p -m 644 nls/$language.cat $dest/tcsh
+    echo "%lang($lang) %{_datadir}/locale/$lang/LC_MESSAGES/tcsh"
+  fi
 done > tcsh.lang << _EOF
 de german
 el greek
@@ -116,30 +116,26 @@ rm -rf $RPM_BUILD_ROOT
 
 %post
 if [ ! -f /etc/shells ]; then
- echo "%{_bindir}/tcsh" >> /etc/shells
- echo "/bin/tcsh" >> /etc/shells
- echo "%{_bindir}/csh"	>> /etc/shells
- echo "/bin/csh"	>> /etc/shells
+  echo "%{_bindir}/tcsh" >> /etc/shells
+  echo "/bin/tcsh"       >> /etc/shells
+  echo "%{_bindir}/csh"  >> /etc/shells
+  echo "/bin/csh"        >> /etc/shells
 else
- grep -q '^%{_bindir}/tcsh$' /etc/shells || \
- echo "%{_bindir}/tcsh" >> /etc/shells
- grep -q '^/bin/tcsh$' /etc/shells || \
- echo "/bin/tcsh" >> /etc/shells
- grep -q '^%{_bindir}/csh$'  /etc/shells || \
- echo "%{_bindir}/csh"	>> /etc/shells
- grep -q '^/bin/csh$'  /etc/shells || \
- echo "/bin/csh"	>> /etc/shells
+  grep -q '^%{_bindir}/tcsh$' /etc/shells || echo "%{_bindir}/tcsh" >> /etc/shells
+  grep -q '^/bin/tcsh$'       /etc/shells || echo "/bin/tcsh"       >> /etc/shells
+  grep -q '^%{_bindir}/csh$'  /etc/shells || echo "%{_bindir}/csh"  >> /etc/shells
+  grep -q '^/bin/csh$'        /etc/shells || echo "/bin/csh"        >> /etc/shells
 fi
 
 
 %postun
 if [ ! -x %{_bindir}/tcsh ]; then
- grep -v '^%{_bindir}/tcsh$'  /etc/shells | \
- grep -v '^%{_bindir}/csh$' > /etc/shells.rpm && \
- grep -v '^/bin/tcsh$'  /etc/shells | \
- grep -v '^%{_bindir}/csh$' | \
- grep -v '^/bin/csh$' > /etc/shells.rpm && \
- mv /etc/shells.rpm /etc/shells
+  grep -v '^%{_bindir}/tcsh$'  /etc/shells | \
+  grep -v '^%{_bindir}/csh$' > /etc/shells.rpm && \
+  grep -v '^/bin/tcsh$'  /etc/shells | \
+  grep -v '^%{_bindir}/csh$' | \
+  grep -v '^/bin/csh$' > /etc/shells.rpm && \
+  mv /etc/shells.rpm /etc/shells
 fi