diff --git a/yash.spec b/yash.spec
index 75894f6..aa64f8f 100644
--- a/yash.spec
+++ b/yash.spec
@@ -4,7 +4,7 @@
 
 %global		repoid		48168
 
-%global		mainver		3
+%global		mainver		4
 %global		minorver	b0
 
 Name:		yash
@@ -82,7 +82,7 @@ make test || { sleep 3 ; cat tests/test.log ; sleep 3; exit 1; }
 %post
 if [ -f %{_sysconfdir}/shells ]
 then
-	grep -q '^/bin/yash$' || echo '/bin/yash' >> %{_sysconfdir}/shells
+	grep -q '^/bin/yash$' %{_sysconfdir}/shells || echo '/bin/yash' >> %{_sysconfdir}/shells
 else
 	echo '/bin/yash' > %{_sysconfdir}/shells
 fi
@@ -109,6 +109,9 @@ exit 0
 %lang(ja)	%doc	%{name}-doc-%{version}%{?minorver}/*
 
 %changelog
+* Tue Jul 13 2010 Mamoru Tasaka <mtasaka@ioa.s.u-tokyo.ac.jp> - 2.22-0.4.b0
+- Fix scriplet error
+
 * Mon Jul  5 2010 Mamoru Tasaka <mtasaka@ioa.s.u-tokyo.ac.jp> - 2.22-0.3.b0
 - Fix license tag for -doc subpackage