diff --git a/libmpeg2.changes b/libmpeg2.changes
index 7622283..8c658e8 100644
--- a/libmpeg2.changes
+++ b/libmpeg2.changes
@@ -1,3 +1,8 @@
+-------------------------------------------------------------------
+Mon Feb 19 00:08:07 UTC 2018 - jengelh@inai.de
+
+- Fix RPM groups, and use pkgconfig() symbols.
+
 -------------------------------------------------------------------
 Wed Feb 14 20:37:38 UTC 2018 - bjorn.lie@gmail.com
 
diff --git a/libmpeg2.spec b/libmpeg2.spec
index 6dcdab2..64c4ae3 100644
--- a/libmpeg2.spec
+++ b/libmpeg2.spec
@@ -24,42 +24,37 @@ Version:        0.5.1
 Release:        0
 Summary:        MPEG-2 Video Stream Decoder
 License:        GPL-2.0+
-Group:          System/Libraries
+Group:          Development/Libraries/C and C++
 URL:            http://libmpeg2.sourceforge.net/
-# Upstream source url is currently down
-#Source0:        http://libmpeg2.sourceforge.net/files/libmpeg2-%{version}.tar.gz
-Source:         libmpeg2-%{version}.tar.gz
+Source:         http://libmpeg2.sourceforge.net/files/libmpeg2-%{version}.tar.gz
 Source99:       baselibs.conf
 
 Patch0:         libmpeg2-0.5.1-altivec.patch
 Patch1:         libmpeg2-0.5.1-arm-private-symbols.patch
 Patch2:         libmpeg2-0.5.1-global-symbol-test.patch
 
-BuildRequires:  SDL-devel
+BuildRequires:  pkgconfig(sdl)
 BuildRequires:  libtool
-BuildRequires:  libXext-devel
-BuildRequires:  libXv-devel
+BuildRequires:  pkgconfig(xext)
+BuildRequires:  pkgconfig(xv)
 BuildRequires:  pkgconfig
 
 %description
-libmpeg2 is a free library for decoding mpeg-2 and mpeg-1 video streams. It is
-released under the terms of the GPL license.
+libmpeg2 is a library for decoding MPEG-1 and MPEG-2 video streams.
 
 %package -n %{libname}
 Summary:        MPEG-2 Video Stream Decoder
 Group:          System/Libraries
 
 %description -n %{libname}
-libmpeg2 is a free library for decoding mpeg-2 and mpeg-1 video streams. It is
-released under the terms of the GPL license.
+libmpeg2 is a library for decoding MPEG-1 and MPEG-2 video streams.
 
 %package -n %{libconvertname}
 Summary:        MPEG-2 Video Stream Decoder
 Group:          System/Libraries
 
 %description -n %{libconvertname}
-libmpeg2 is a free library for decoding mpeg-2 and mpeg-1 video streams. It is
-released under the terms of the GPL license.
+libmpeg2 is a library for decoding MPEG-1 and MPEG-2 video streams.
 
 %package devel
 Summary:        Development files for %{name}
@@ -78,7 +73,7 @@ Requires:       %{libconvertname} = %{version}
 Requires:       %{libname} = %{version}
 
 %description -n mpeg2dec
-A MPEG2Decoder based on the libmpeg2 libraries.
+An MPEG2Decoder based on the libmpeg2 libraries.
 
 %prep
 %autosetup -p1