diff --git a/pam.spec b/pam.spec
index 0f7ff4c..2eca017 100644
--- a/pam.spec
+++ b/pam.spec
@@ -114,22 +114,22 @@ autoreconf -i
 
 %build
 %configure \
-	--libdir=%{_pam_libdir} \
-	--includedir=%{_includedir}/security \
-	--disable-rpath \
-	--disable-static \
-	--disable-prelude \
-	--enable-audit \
-	--enable-openssl \
-	--enable-selinux \
-	--enable-vendordir=%{_datadir}
+  --libdir=%{_pam_libdir} \
+  --includedir=%{_includedir}/security \
+  --disable-rpath \
+  --disable-static \
+  --disable-prelude \
+  --enable-audit \
+  --enable-openssl \
+  --enable-selinux \
+  --enable-vendordir=%{_datadir}
 %make_build -C po update-gmo
 %make_build
 
 %install
 mkdir -p doc/txts
 for readme in modules/pam_*/README ; do
-	cp -f ${readme} doc/txts/README.`dirname ${readme} | sed -e 's|^modules/||'`
+  cp -f ${readme} doc/txts/README.`dirname ${readme} | sed -e 's|^modules/||'`
 done
 
 # Install the macros file
@@ -170,23 +170,23 @@ ln -sf system-auth.5 %{buildroot}%{_mandir}/man5/smartcard-auth.5
 
 
 for phase in auth acct passwd session ; do
-	ln -sf pam_unix.so %{buildroot}%{_pam_moduledir}/pam_unix_${phase}.so
+  ln -sf pam_unix.so %{buildroot}%{_pam_moduledir}/pam_unix_${phase}.so
 done
 
 # Remove .la files and make new .so links -- this depends on the value
 # of _libdir not changing, and *not* being /usr/lib.
 for lib in libpam libpamc libpam_misc ; do
-rm -f %{buildroot}%{_pam_libdir}/${lib}.la
+  rm -f %{buildroot}%{_pam_libdir}/${lib}.la
 done
 rm -f %{buildroot}%{_pam_moduledir}/*.la
 
 %if "%{_pam_libdir}" != "%{_libdir}"
 install -d -m 755 %{buildroot}%{_libdir}
 for lib in libpam libpamc libpam_misc ; do
-pushd %{buildroot}%{_libdir}
-ln -sf %{_pam_libdir}/${lib}.so.*.* ${lib}.so
-popd
-rm -f %{buildroot}%{_pam_libdir}/${lib}.so
+  pushd %{buildroot}%{_libdir}
+  ln -sf %{_pam_libdir}/${lib}.so.*.* ${lib}.so
+  popd
+  rm -f %{buildroot}%{_pam_libdir}/${lib}.so
 done
 %endif
 
@@ -217,13 +217,13 @@ find %{buildroot}%{_pkgdocdir} -type f | xargs chmod 644
 # Make sure every module subdirectory gave us a module.  Yes, this is hackish.
 for dir in modules/pam_* ; do
 if [ -d ${dir} ] ; then
-	[ ${dir} = "modules/pam_selinux" ] && continue
-	[ ${dir} = "modules/pam_sepermit" ] && continue
-	[ ${dir} = "modules/pam_tty_audit" ] && continue
-	if ! ls -1 %{buildroot}%{_pam_moduledir}/`basename ${dir}`*.so ; then
-		echo ERROR `basename ${dir}` did not build a module.
-		exit 1
-	fi
+  [ ${dir} = "modules/pam_selinux" ] && continue
+  [ ${dir} = "modules/pam_sepermit" ] && continue
+  [ ${dir} = "modules/pam_tty_audit" ] && continue
+  if ! ls -1 %{buildroot}%{_pam_moduledir}/`basename ${dir}`*.so ; then
+    echo ERROR `basename ${dir}` did not build a module.
+    exit 1
+  fi
 fi
 done
 
@@ -231,11 +231,11 @@ done
 # installed can actually be loaded by a minimal PAM-aware application.
 /sbin/ldconfig -n %{buildroot}%{_pam_libdir}
 for module in %{buildroot}%{_pam_moduledir}/pam*.so ; do
-	if ! env LD_LIBRARY_PATH=%{buildroot}%{_pam_libdir} \
-		 %{SOURCE11} -ldl -lpam -L%{buildroot}%{_libdir} ${module} ; then
-		echo ERROR module: ${module} cannot be loaded.
-		exit 1
-	fi
+  if ! env LD_LIBRARY_PATH=%{buildroot}%{_pam_libdir} \
+       %{SOURCE11} -ldl -lpam -L%{buildroot}%{_libdir} ${module} ; then
+    echo ERROR module: ${module} cannot be loaded.
+    exit 1
+  fi
 done
 
 %files -f Linux-PAM.lang
@@ -380,6 +380,7 @@ exit 0
 - Rename docs sub-package to doc
 - Replace $RPM_BUILD_ROOT with %%{buildroot}
 - Move documentation to %%{_pkgdocdir}
+- Constantly use spaces for indentation
 
 * Thu Sep 23 2021 Björn Esser <besser82@fedoraproject.org> - 1.5.2-5
 - Rebase to pam-redhat-1.1.5