diff --git a/60-sispmctl.rules b/60-sispmctl.rules
deleted file mode 100644
index b120f4d..0000000
--- a/60-sispmctl.rules
+++ /dev/null
@@ -1,7 +0,0 @@
-# do not edit this file, it will be overwritten on update
-
-SUBSYSTEMS=="usb", ATTR{idVendor}=="04b4", ATTR{idProduct}=="fd10", GROUP="dialout", MODE="660"
-SUBSYSTEMS=="usb", ATTR{idVendor}=="04b4", ATTR{idProduct}=="fd11", GROUP="dialout", MODE="660"
-SUBSYSTEMS=="usb", ATTR{idVendor}=="04b4", ATTR{idProduct}=="fd12", GROUP="dialout", MODE="660"
-SUBSYSTEMS=="usb", ATTR{idVendor}=="04b4", ATTR{idProduct}=="fd13", GROUP="dialout", MODE="660"
-SUBSYSTEMS=="usb", ATTR{idVendor}=="04b4", ATTR{idProduct}=="fd15", GROUP="dialout", MODE="660"
diff --git a/sispmctl.changes b/sispmctl.changes
index 88225b8..0191d34 100644
--- a/sispmctl.changes
+++ b/sispmctl.changes
@@ -1,3 +1,10 @@
+-------------------------------------------------------------------
+Thu Feb  6 13:08:17 UTC 2020 - Tomáš Chvátal <tchvatal@suse.com>
+
+- Split devel files to devel subpkg
+- Remove unused source file
+- Format with spec-cleaner
+
 -------------------------------------------------------------------
 Mon Jan 27 14:39:53 UTC 2020 - Guillaume GARDET <guillaume.gardet@opensuse.org>
 
diff --git a/sispmctl.spec b/sispmctl.spec
index 6522d06..127ac6c 100644
--- a/sispmctl.spec
+++ b/sispmctl.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package sispmctl
 #
-# Copyright (c) 2019 SUSE LLC
+# Copyright (c) 2020 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -16,60 +16,65 @@
 #
 
 
-%define _udevrulesdir %(pkg-config --variable=udevdir udev)/rules.d
-
+%define libname libsispmctl0
 Name:           sispmctl
 Version:        4.2
 Release:        0
 Summary:        SIS-PM Control for Linux
 License:        GPL-2.0-only
-Group:          System/Management
 URL:            https://sourceforge.net/projects/sispmctl/
 Source0:        sispmctl-%{version}.tar.gz
 BuildRequires:  libtool
-BuildRequires:  libusb-compat-devel
-BuildRequires:  udev
+BuildRequires:  pkgconfig
+BuildRequires:  pkgconfig(libusb)
+BuildRequires:  pkgconfig(udev)
 
 %description
 This projects adds support control for the GEMBIRD Silver Shield PM device to linux.
 
-%package -n libsispmctl0
-Summary:        Development libraries for sispmctl
-Group:          Development/Libraries/C and C++
+%package -n %{libname}
+Summary:        Libraries for sispmctl
 
-%description -n libsispmctl0
-Libs for for the GEMBIRD Silver Shield PM device.
+%description -n %{libname}
+Libraries for the GEMBIRD Silver Shield PM device.
+
+%package devel
+Summary:        Development files for sispmctl
+Requires:       %{libname} = %{version}
+
+%description devel
+Development files for the GEMBIRD Silver Shield PM device.
 
 %prep
 %setup -q
 
 %build
 %configure \
-	--enable-webless
-
-make %{?_smp_mflags}
+  --disable-static \
+  --enable-webless
+%make_build
 
 %install
 %make_install
 # Remove static libs
-rm -rf %{buildroot}%{_libdir}/*.{la,a}
+find %{buildroot} -type f -name "*.la" -delete -print
 
-mkdir -p %{buildroot}%{_udevrulesdir}
-install -c -m 0644 examples/60-sispmctl.rules %{buildroot}%{_udevrulesdir}/60-sispmctl.rules 
+install -Dm 0644 examples/60-sispmctl.rules %{buildroot}%{_udevrulesdir}/60-sispmctl.rules
 
-%post -n libsispmctl0 -p /sbin/ldconfig
-%postun -n libsispmctl0 -p /sbin/ldconfig
+%post -n %{libname} -p /sbin/ldconfig
+%postun -n %{libname} -p /sbin/ldconfig
 
 %files
-%doc %{_mandir}/man1/sispmctl.1.gz 
+%{_mandir}/man1/sispmctl.1%{?ext_man}
 %license COPYING
 %verify(not mode caps) %{_bindir}/sispmctl
 %dir %{_udevrulesdir}
 %{_udevrulesdir}/60-sispmctl.rules
 
-%files -n libsispmctl0
-%verify(not mode caps) %{_libdir}/libsispmctl.so
+%files -n %{libname}
 %verify(not mode caps) %{_libdir}/libsispmctl.so.*
 
+%files devel
+%verify(not mode caps) %{_libdir}/libsispmctl.so
 
 %changelog