diff --git a/powerpc-utils.spec b/powerpc-utils.spec
index d8fc48a..c73276d 100644
--- a/powerpc-utils.spec
+++ b/powerpc-utils.spec
@@ -1,31 +1,30 @@
 Name:           powerpc-utils
 Version:        1.3.4
-Release:        3%{?dist}
+Release:        4%{?dist}
 Summary:        Utilities for PowerPC platforms
 
 Group:          System Environment/Base
 License:        GPLv2
 URL:            https://github.com/ibm-power-utilities/powerpc-utils
-Source0:        https://github.com/ibm-power-utilities/%{name}/archive/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
+Source0:        https://github.com/ibm-power-utilities/%{name}/archive/v%{version}/%{name}-%{version}.tar.gz
 Source1:        nvsetenv
 
 ExclusiveArch:  ppc %{power64}
 
-BuildRequires:  zlib-devel doxygen automake
+BuildRequires:  automake
+BuildRequires:  doxygen
+BuildRequires:  automake
 BuildRequires:  librtas-devel >= 1.4.0
 BuildRequires:  libservicelog-devel >= 1.0.1-2
+BuildRequires:  perl-generators
 
-# should be fixed - libservicelog is not right name
-Requires:       libservicelog bc which
-# rtas_dump dependency  
+Requires:       /usr/bin/which
+# rtas_dump explicit dependency
 Requires:       perl(Data::Dumper)
 Requires:       %{name}-core = %{version}-%{release}
 
-Obsoletes:      powerpc-utils-papr <= 1.1.7-6
-Provides:       powerpc-utils-papr = 1.1.7-6
-
-Patch1:		powerpc-utils-1.2.15-man.patch
-Patch2:		powerpc-utils-1.2.27-makefile.patch
+Patch1:         powerpc-utils-1.2.15-man.patch
+Patch2:         powerpc-utils-1.2.27-makefile.patch
 
 %description
 Utilities for PowerPC platforms.
@@ -86,6 +85,7 @@ rm -rf $RPM_BUILD_ROOT/etc/init.d/ibmvscsis.sh $RPM_BUILD_ROOT/usr/sbin/vscsisad
 # nvsetenv is just a wrapper to nvram
 ln -s nvram.8.gz $RPM_BUILD_ROOT/%{_mandir}/man8/nvsetenv.8.gz
 
+
 %files
 %doc README Changelog
 
@@ -146,7 +146,6 @@ ln -s nvram.8.gz $RPM_BUILD_ROOT/%{_mandir}/man8/nvsetenv.8.gz
 %{_mandir}/man8/update_flash.8*
 
 %files core
-%{!?_licensedir:%global license %%doc}
 %license COPYING
 
 %{_sbindir}/nvram
@@ -158,6 +157,10 @@ ln -s nvram.8.gz $RPM_BUILD_ROOT/%{_mandir}/man8/nvsetenv.8.gz
 
 
 %changelog
+* Tue Apr 17 2018 Dan Horák <dan[at]danny.cz> - 1.3.4-4
+- fix deps for perl-based tools
+- spec cleanup
+
 * Fri Feb 09 2018 Fedora Release Engineering <releng@fedoraproject.org> - 1.3.4-3
 - Rebuilt for https://fedoraproject.org/wiki/Fedora_28_Mass_Rebuild