diff --git a/cook.spec b/cook.spec
index 277977a..7c8d30f 100644
--- a/cook.spec
+++ b/cook.spec
@@ -1,6 +1,6 @@
 Name:		cook
 Version:	2.34
-Release:	13%{?dist}
+Release:	14%{?dist}
 
 Summary: 	File construction tool
 
@@ -10,7 +10,6 @@ URL:		http://miller.emu.id.au/pmiller/software/cook
 Source:		http://miller.emu.id.au/pmiller/software/cook/cook-%{version}.tar.gz
 BuildRoot:	%{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 BuildRequires:	groff
-BuildRequires:	groff-perl
 BuildRequires:  bison
 BuildRequires:  gettext
 BuildRequires:  perl-generators
@@ -35,9 +34,9 @@ mechanism to define these.
 %configure --libdir=%{_datadir}
 # _smp_mflags breaks the build
 make # %{?_smp_mflags}
-`grog -Tps lib/en/tutorial/main.mm` > tutorial.ps
-`grog -Tps lib/en/user-guide/main.mm` > user-guide.ps
-`grog -Tps lib/en/refman/main.man` > refman.ps
+groff -Tps -s -p -t -mm lib/en/tutorial/main.mm > tutorial.ps
+groff -Tps -s -p -t -mm lib/en/user-guide/main.mm > user-guide.ps
+groff -Tps -s -p -t -mm lib/en/refman/main.man > refman.ps
 for f in *.ps; do
     ps2pdf $f
 done
@@ -74,6 +73,9 @@ rm -fr ${RPM_BUILD_ROOT}
 
 
 %changelog
+* Thu Jul 13 2017 Petr Pisar <ppisar@redhat.com> - 2.34-14
+- Do not use broken grog for generating documentation (bug #1307402)
+
 * Thu Jul 13 2017 Petr Pisar <ppisar@redhat.com> - 2.34-13
 - perl dependency renamed to perl-interpreter
   <https://fedoraproject.org/wiki/Changes/perl_Package_to_Install_Core_Modules>