diff --git a/earlyoom-1.3.tar.bz2 b/earlyoom-1.3.tar.bz2
deleted file mode 100644
index ae855d9..0000000
--- a/earlyoom-1.3.tar.bz2
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:dbc396661e0e5a0a3b7664b9469349342ef9b5d3904e0ec2a9b8bb61a0374b52
-size 28106
diff --git a/earlyoom-1.3.tar.gz b/earlyoom-1.3.tar.gz
new file mode 100644
index 0000000..a89a9bd
--- /dev/null
+++ b/earlyoom-1.3.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:2c605017d1208e43b92708e9bae623bc860b6ab2e5390c935e5e10ac932016f8
+size 31399
diff --git a/earlyoom.spec b/earlyoom.spec
index 165c96e..415fcef 100644
--- a/earlyoom.spec
+++ b/earlyoom.spec
@@ -16,20 +16,20 @@
 #
 
 
-%global rpm_version %(rpm -q --qf %%{version} rpm)
 %if ! 0%{?_fillupdir:1}
 %global _fillupdir %{_localstatedir}/adm/fillup-templates
 %endif
+
 Name:           earlyoom
 Version:        1.3
-Release:        0%{?extraver:0.}1%{?dist}
+Release:        0
 Summary:        Early OOM Daemon for Linux
 License:        MIT
 Group:          System/Daemons
 URL:            https://github.com/rfjakob/earlyoom
-Source0:        %{name}-%{version}.tar.bz2
+Source0:        https://github.com/rfjakob/earlyoom/archive/v%{version}.tar.gz#/%{name}-%{version}.tar.gz
 Source11:       earlyoom.sysconfig
-# pandoc only for `pandoc MANPAGE.md -s -t man > earlyoom.1`, thus could be excluded if earlyoom.1 would be provided.
+# pandoc only for `pandoc MANPAGE.md -s -t man > earlyoom.1`
 BuildRequires:  pandoc
 BuildRequires:  pkgconfig
 BuildRequires:  pkgconfig(systemd)
@@ -41,29 +41,21 @@ Conflicts:      oomd
 earlyoom checks the amount of available memory and free swap, and if both are
 below critical level, it will kill the largest process (highest oom_score).
 
-# Preparation step (unpackung and patching if necessary)
 %prep
-%setup -q -n %{name}-%{version}%{?extraver}
+%setup -q
+
 # Fix defaults file location
 sed -i 's|/default/|/sysconfig/|' earlyoom.service.in
-# CentOS' gzip does not have option `-k`
-sed -i 's|gzip -f -k.*$|gzip -c $< > $@|' Makefile
+
 # Fix LDFLAGS handling
 sed -ri '/LDFLAGS/ s|$| -lrt|' Makefile
 
-# Build step (compile/build binaries, documentation, etc)
 %build
-_CFLAGS='%{optflags} %{?gcc_lto} -Wall -Wextra -DVERSION=\"%{version}\" -fstack-protector-all -std=gnu99'
-_LDFLAGS='-Wl,--as-needed -Wl,--strip-all %{?gcc_lto}'
-make %{?_smp_mflags} \
-  CFLAGS="$_CFLAGS" \
-  LDFLAGS="$_LDFLAGS"
+CFLAGS='%{optflags} -DVERSION=\"%{version}\" -std=gnu99'
+make %{?_smp_mflags} CFLAGS="$CFLAGS"
 
-# Install built stuff
 %install
-make install DESTDIR=%{buildroot} \
-  SYSTEMDUNITDIR=%{_unitdir} \
-  PREFIX=%{_prefix}
+%make_install PREFIX=%{_prefix} SYSTEMDUNITDIR=%{_unitdir}
 install -D -m644 %{SOURCE11} %{buildroot}%{_fillupdir}/sysconfig.%{name}
 
 # Files list
@@ -76,32 +68,17 @@ install -D -m644 %{SOURCE11} %{buildroot}%{_fillupdir}/sysconfig.%{name}
 %{_fillupdir}/sysconfig.%{name}
 %{_mandir}/man1/earlyoom.1%{?ext_man}
 
-%if 0%{?_unitdir:1}
 %pre
 %{service_add_pre %{name}.service}
-%endif
 
 %post
-%if 0%{?_unitdir:1}
 %{fillup_only %{name}}
 %{service_add_post %{name}.service}
-%else
-%{fillup_and_insserv %{name}}
-%endif
 
 %preun
-%if 0%{?_unitdir:1}
 %{service_del_preun %{name}.service}
-%else
-%{stop_on_removal %{name}}
-%endif
 
 %postun
-%if 0%{?_unitdir:1}
 %{service_del_postun %{name}.service}
-%else
-%{restart_on_update %{name}}
-%endif
-%insserv_cleanup
 
 %changelog