diff --git a/golang-github-golang-glog.spec b/golang-github-golang-glog.spec
index c444370..032b985 100644
--- a/golang-github-golang-glog.spec
+++ b/golang-github-golang-glog.spec
@@ -1,16 +1,27 @@
-%if 0%{?fedora} || 0%{?rhel} == 6
+# If any of the following macros should be set otherwise,
+# you can wrap any of them with the following conditions:
+# - %%if 0%%{centos} == 7
+# - %%if 0%%{?rhel} == 7
+# - %%if 0%%{?fedora} == 23
+# Or just test for particular distribution:
+# - %%if 0%%{centos}
+# - %%if 0%%{?rhel}
+# - %%if 0%%{?fedora}
+#
+# Be aware, on centos, both %%rhel and %%centos are set. If you want to test
+# rhel specific macros, you can use %%if 0%%{?rhel} && 0%%{?centos} == 0 condition.
+# (Don't forget to replace double percentage symbol with single one in order to apply a condition)
+
+# Generate devel rpm
 %global with_devel 1
+# Build project from bundled dependencies
 %global with_bundled 0
+# Build with debug info rpm
 %global with_debug 0
+# Run tests in check section
 %global with_check 1
+# Generate unit-test rpm
 %global with_unit_test 1
-%else
-%global with_devel 1
-%global with_bundled 0
-%global with_debug 0
-%global with_check 1
-%global with_unit_test 1
-%endif
 
 %if 0%{?with_debug}
 %global _dwz_low_mem_die_limit 0
@@ -30,14 +41,14 @@
 
 Name:           golang-%{provider}-%{project}-%{repo}
 Version:        0
-Release:        0.12.git%{shortcommit}%{?dist}
+Release:        0.13.git%{shortcommit}%{?dist}
 Summary:        Leveled execution logs for Go
 License:        ASL 2.0
 URL:            https://%{provider_prefix}
 Source0:        https://%{provider_prefix}/archive/%{commit}/%{repo}-%{shortcommit}.tar.gz
 
 # e.g. el6 has ppc64 arch without gcc-go, so EA tag is required
-ExclusiveArch:  %{?go_arches:%{go_arches}}%{!?go_arches:%{ix86} x86_64 %{arm}}
+ExclusiveArch:  %{?go_arches:%{go_arches}}%{!?go_arches:%{ix86} x86_64 aarch64 %{arm}}
 # If go_compiler is not set to 1, there is no virtual provide. Use golang instead.
 BuildRequires:  %{?go_compiler:compiler(go-compiler)}%{!?go_compiler:golang}
 
@@ -74,8 +85,6 @@ building other packages which use import path with
 %if 0%{?with_unit_test} && 0%{?with_devel}
 %package unit-test
 Summary:         Unit tests for %{name} package
-# If go_compiler is not set to 1, there is no virtual provide. Use golang instead.
-BuildRequires:  %{?go_compiler:compiler(go-compiler)}%{!?go_compiler:golang}
 
 %if 0%{?with_check}
 #Here comes all BuildRequires: PACKAGE the unit tests
@@ -159,6 +168,10 @@ export GOPATH=%{buildroot}/%{gopath}:$(pwd)/Godeps/_workspace:%{gopath}
 %endif
 
 %changelog
+* Thu Dec 15 2016 Jan Chaloupka <jchaloup@redhat.com> - 0-0.13.gitfca8c88
+- Polish the spec file
+  related: #1249052
+
 * Thu Sep 15 2016 jchaloup <jchaloup@redhat.com> - 0-0.12.gitfca8c88
 - Enable devel and unit-test packages for epel7
   related: #1249052
diff --git a/sources b/sources
index 758fee8..506953e 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-352584d3c0d432df0ee9594fae12c1a4  glog-fca8c88.tar.gz
+SHA512 (glog-fca8c88.tar.gz) = 0084d1ffc1fc12d46c6287432695dbe78643a64d0a9492a2a6b94a39452da4a5948884b29cb4b6fce26cab326137e8816534035962e9ad5d12e4089ca5d56c6f