diff --git a/alexandria-0.6.2b2-crash-when-no-yelp.patch b/alexandria-0.6.2b2-crash-when-no-yelp.patch
new file mode 100644
index 0000000..170b874
--- /dev/null
+++ b/alexandria-0.6.2b2-crash-when-no-yelp.patch
@@ -0,0 +1,13 @@
+--- alexandria-0.6.2b2/lib/alexandria/ui/main_app.rb.noyelp	2007-10-26 00:16:17.000000000 +0900
++++ alexandria-0.6.2b2/lib/alexandria/ui/main_app.rb	2007-12-16 18:05:07.000000000 +0900
+@@ -290,7 +290,9 @@
+ 
+       def display_help
+         Gnome::Help.display('alexandria',
+-                            nil) rescue ErrorDialog.new(@main_app,
++                            nil) 
++	rescue => e 
++		ErrorDialog.new(@main_app,
+                             e.message)
+       end
+ 
diff --git a/alexandria.spec b/alexandria.spec
index c21f5e3..b0cfe48 100644
--- a/alexandria.spec
+++ b/alexandria.spec
@@ -5,7 +5,7 @@
 %define		majorver	0.6.2
 %define		minorver	b2
 
-%define		fedorarel	4
+%define		fedorarel	5
 %define		rel		%{?minorver:0.}%{fedorarel}%{?minorver:.%minorver}
 
 
@@ -20,6 +20,7 @@ License:	GPLv2+
 URL:		http://alexandria.rubyforge.org/
 Source0:	http://rubyforge.org/frs/download.php/%{repoid}/%{name}-%{version}%{?minorver}.tar.gz
 Patch0:		alexandria-0.6.2b2-dont_fail_on_no_evolution.patch
+Patch1:		alexandria-0.6.2b2-crash-when-no-yelp.patch
 BuildRoot:	%{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 BuildArch:	noarch
@@ -65,6 +66,7 @@ Alexandria is a GNOME application to help you manage your book collection.
 %prep
 %setup -q -n %{name}-%{majorver}%{?minorver}
 %patch0 -p1 -b .noevolution
+%patch1 -p1 -b .noyelp
 
 %build
 rake build
@@ -167,8 +169,9 @@ exit 0
 %{_datadir}/icons/hicolor/*/apps/%{name}.*
 
 %changelog
-* Sun Dec 16 2007 Mamoru Tasaka <mtasaka@ioa.s.u-tokyo.ac.jp> - 0.6.2-0.4.b2
+* Sun Dec 16 2007 Mamoru Tasaka <mtasaka@ioa.s.u-tokyo.ac.jp> - 0.6.2-0.5.b2
 - Pass exception when user don't use evolution for mailer.
+- Fix crash when yelp is not installed.
 
 * Wed Dec 12 2007 Mamoru Tasaka <mtasaka@ioa.s.u-tokyo.ac.jp> - 0.6.2-0.3.b2
 - Also require ruby(revolution)