diff --git a/soundtouch.spec b/soundtouch.spec
index edfcebf..8810272 100644
--- a/soundtouch.spec
+++ b/soundtouch.spec
@@ -25,7 +25,7 @@ Url:            http://www.surina.net/soundtouch
 Summary:        Audio Processing Library
 Version:        1.4.0
 Release:        2
-BuildRequires:  gcc-c++
+BuildRequires:  gcc-c++ pkg-config
 Source:         %{name}-%{version}.tar.bz2
 BuildRoot:      %{_tmppath}/%{name}-%{version}-build
 
@@ -43,7 +43,7 @@ Authors:
 %package -n libSoundTouch0
 License:        LGPL v2.1 or later
 Summary:        Audio Processing Library
-Group:          Productivity/Multimedia/Sound/Editors and Convertors
+Group:          System/Libraries
 
 %description -n libSoundTouch0
 SoundTouch is an open source audio processing library that allows
@@ -59,16 +59,14 @@ Authors:
 %package devel
 License:        LGPL v2.1 or later
 Summary:        Audio Processing Library
-Group:          Productivity/Multimedia/Sound/Editors and Convertors
-Requires:       libSoundTouch0 = %{version} glibc-devel
+Group:          Development/Languages/C and C++
+Requires:       %{name} = %{version} glibc-devel
 
 %description devel
 SoundTouch is an open-source audio processing library that allows
 changing the sound tempo, pitch and playback rate parameters
 independently from each other.
 
-
-
 Authors:
 --------
     Olli Parviainen