diff --git a/ladspa-devel.changes b/ladspa-devel.changes
deleted file mode 100644
index 172f807..0000000
--- a/ladspa-devel.changes
+++ /dev/null
@@ -1,15 +0,0 @@
--------------------------------------------------------------------
-Thu Jan 21 07:27:40 UTC 2010 - davejplater@gmail.com
-
-- Update to 1.13
-
--------------------------------------------------------------------
-Wed Feb 13 13:50:30 CET 2008 - adrian@suse.de
-
-- remove NoSource flag according to our policy
-
--------------------------------------------------------------------
-Wed Apr 18 13:01:02 CEST 2007 - tiwai@suse.de
-
-- split ladspa-devel.spec to reduce the build dependency
-
diff --git a/ladspa-devel.spec b/ladspa-devel.spec
deleted file mode 100644
index d20aeca..0000000
--- a/ladspa-devel.spec
+++ /dev/null
@@ -1,55 +0,0 @@
-#
-# spec file for package ladspa-devel
-#
-# Copyright (c) 2013 SUSE LINUX Products GmbH, Nuernberg, Germany.
-#
-# All modifications and additions to the file contributed by third parties
-# remain the property of their copyright owners, unless otherwise agreed
-# upon. The license for this file, and modifications and additions to the
-# file, is the same license as for the pristine package itself (unless the
-# license for the pristine package is not an Open Source License, in which
-# case the license is the MIT License). An "Open Source License" is a
-# license that conforms to the Open Source Definition (Version 1.9)
-# published by the Open Source Initiative.
-
-# Please submit bugfixes or comments via http://bugs.opensuse.org/
-#
-
-
-Name:           ladspa-devel
-Summary:        Include Files mandatory for Development
-License:        LGPL-2.1+
-Group:          Development/Libraries/C and C++
-Version:        1.13
-Release:        0
-Source:         ladspa_sdk_1.13.tar.bz2
-Url:            http://www.ladspa.org/
-BuildRoot:      %{_tmppath}/%{name}-%{version}-build
-BuildArch:      noarch
-Provides:       ladspa-devel > 1.12.code10.3.1
-
-%description
-This package contains include files to develop LADSPA plugins.
-
-%prep
-%setup -n ladspa_sdk
-
-%build
-
-%install
-mkdir -p $RPM_BUILD_ROOT%{_includedir}
-cp src/ladspa.h $RPM_BUILD_ROOT%{_includedir}
-mkdir -p $RPM_BUILD_ROOT%{_docdir}/%{name}
-cp -av README $RPM_BUILD_ROOT%{_docdir}/%{name}
-cp -av doc/* $RPM_BUILD_ROOT%{_docdir}/%{name}
-ln -sf %{_includedir}/ladspa.h $RPM_BUILD_ROOT%{_docdir}/%{name}/ladspa.h.txt
-
-%clean
-rm -rf $RPM_BUILD_ROOT
-
-%files
-%defattr(-,root,root)
-%doc %{_docdir}/%{name}
-%{_includedir}/*
-
-%changelog
diff --git a/ladspa.changes b/ladspa.changes
index 59f55b9..e045e90 100644
--- a/ladspa.changes
+++ b/ladspa.changes
@@ -1,3 +1,11 @@
+-------------------------------------------------------------------
+Wed Dec  4 15:55:53 CET 2013 - tiwai@suse.de
+
+- Merge ladspa-devel.spec into ladspa.spec; back to root, as OBS
+  doesn't like split packages (the submitreq always declined),
+  and the development activity of this package is pretty low, so
+  no worth to resist
+
 -------------------------------------------------------------------
 Thu Sep 26 14:37:25 CEST 2013 - tiwai@suse.de
 
diff --git a/ladspa.spec b/ladspa.spec
index a8314f7..987afe2 100644
--- a/ladspa.spec
+++ b/ladspa.spec
@@ -144,6 +144,15 @@ ability to write simple plug-in audio processors in C/C++ and link them
 dynamically.  The package contains the LADSPA SDK, the CMT plug-in
 libraries (including Freeverb), and the swh plug-ins.
 
+%package devel
+Summary:        Include Files mandatory for Development
+Group:          Development/Libraries/C and C++
+BuildArch:      noarch
+Provides:       ladspa-devel > 1.12.code10.3.1
+
+%description devel
+This package contains include files to develop LADSPA plugins.
+
 %prep
 #
 # More URLs
@@ -414,8 +423,12 @@ cp -av vlevel-%{vlevel_version}/docs $RPM_BUILD_ROOT%{_docdir}/%{name}/vlevel
 mkdir -p $RPM_BUILD_ROOT%{_docdir}/%{name}/examples/vlevel
 cp -av vlevel-%{vlevel_version}/utils/* $RPM_BUILD_ROOT%{_docdir}/%{name}/examples/vlevel
 chmod 644 $RPM_BUILD_ROOT%{_docdir}/%{name}/cmt/plugins.html
-# remove incldue file (already in devel package)
-rm -f $RPM_BUILD_ROOT%{_includedir}/*
+# devel package
+mkdir -p $RPM_BUILD_ROOT%{_docdir}/%{name}-devel
+cp -av ladspa_sdk/README $RPM_BUILD_ROOT%{_docdir}/%{name}-devel
+cp -av ladspa_sdk/doc/* $RPM_BUILD_ROOT%{_docdir}/%{name}-devel
+ln -sf %{_includedir}/ladspa.h $RPM_BUILD_ROOT%{_docdir}/%{name}-devel/ladspa.h.txt
+#
 %find_lang %{name} --all-name
 %fdupes -s $RPM_BUILD_ROOT
 
@@ -425,9 +438,13 @@ rm -rf $RPM_BUILD_ROOT
 %files -f %{name}.lang
 %defattr(-,root,root)
 %doc %{_docdir}/%{name}
-%doc %{_docdir}/%{name}/examples
 %{_libdir}/ladspa
 %{_bindir}/*
 %{_datadir}/ladspa
 
+%files devel
+%defattr(-,root,root)
+%doc %{_docdir}/%{name}-devel
+%{_includedir}/*
+
 %changelog