diff --git a/phonon/CMakeLists.txt b/phonon/CMakeLists.txt
index 4ed7848392..152de09dad 100644
--- a/phonon/CMakeLists.txt
+++ b/phonon/CMakeLists.txt
@@ -1,103 +1,103 @@
 FIND_PACKAGE(Alsa)
 ALSA_CONFIGURE_FILE(${CMAKE_CURRENT_BINARY_DIR}/config-alsa.h)
 
 OPTION(KDE4_DISABLE_MULTIMEDIA "Disable multimedia support (default: off)" OFF)
 IF (KDE4_DISABLE_MULTIMEDIA)
   MESSAGE(STATUS "Phonon multimedia support disabled by user.")
   SET(HAVE_KDE4_MULTIMEDIA 0)
 ELSE (KDE4_DISABLE_MULTIMEDIA)
   MESSAGE(STATUS "Phonon multimedia support is enabled.")
   SET(HAVE_KDE4_MULTIMEDIA 1)
 ENDIF (KDE4_DISABLE_MULTIMEDIA)
 
 configure_file(config-phonon.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-phonon.h )
 
 # Those apply to all subdirs
 include_directories(${KDE4_KDECORE_INCLUDES} ${CMAKE_BINARY_DIR}/solid)
 
 add_subdirectory( tests )
 add_subdirectory(examples)
 add_subdirectory(experimental)
 add_subdirectory(platform_kde)
 add_subdirectory(libkaudiodevicelist)
 if(NOT MINGW)
   # ICE in outputdevicechoice.cpp:262
   add_subdirectory( kcm )
 endif(NOT MINGW)
 ########### next target ###############
 
 set(phonon_LIB_SRCS
 	objectdescription.cpp
    objectdescriptionmodel.cpp
 	phononnamespace.cpp
 	mediasource.cpp
 	abstractmediastream.cpp
 	streaminterface.cpp
 	mediaobject.cpp
    medianode.cpp
    path.cpp
 	effectparameter.cpp
 	effect.cpp
 	volumefadereffect.cpp
 	audiooutputadaptor.cpp
 	abstractaudiooutput.cpp
 	abstractaudiooutput_p.cpp
 	audiooutput.cpp
 	abstractvideooutput.cpp
 	abstractvideooutput_p.cpp
 	backendcapabilities.cpp
 	globalconfig.cpp
 	factory.cpp
    platform.cpp
 	mediacontroller.cpp
 	videowidget.cpp
    videoplayer.cpp
 	seekslider.cpp
 	volumeslider.cpp
 	effectwidget.cpp
 	iodevicestream.cpp
 	)
 
 kde4_add_library(phonon SHARED ${phonon_LIB_SRCS})
 target_link_libraries(phonon ${QT_QTDBUS_LIBRARY} ${QT_QTCORE_LIBRARY} ${QT_QTGUI_LIBRARY})
 #do not use GENERIC versioning in phonon
-set_target_properties(phonon PROPERTIES VERSION 5.2.0 SOVERSION 5)
+set_target_properties(phonon PROPERTIES VERSION 4.2.0 SOVERSION 4)
 install(TARGETS phonon  DESTINATION ${LIB_INSTALL_DIR})
 
 ########### install files ###############
 
 install( FILES
 	phonon_export.h
 	objectdescription.h
 	objectdescriptionmodel.h
 	phononnamespace.h
 	mediasource.h
 	abstractmediastream.h
 	streaminterface.h
 	mediaobject.h
    audiooutput.h
    medianode.h
    path.h
 	effectparameter.h
 	effect.h
    effectinterface.h
 	volumefadereffect.h
    volumefaderinterface.h
 	abstractaudiooutput.h
 	abstractvideooutput.h
 	backendcapabilities.h
 	phonondefs.h
 	backendinterface.h
 	mediaobjectinterface.h
 	audiooutputinterface.h
 	addoninterface.h
 	mediacontroller.h
 	videowidget.h
    videowidgetinterface.h
 	videoplayer.h
 	seekslider.h
 	volumeslider.h
 	effectwidget.h
 	DESTINATION ${INCLUDE_INSTALL_DIR}/phonon)
 install( FILES  phononbackend.desktop  DESTINATION  ${SERVICETYPES_INSTALL_DIR} )
 install( FILES org.kde.Phonon.AudioOutput.xml DESTINATION ${DBUS_INTERFACES_INSTALL_DIR} )
diff --git a/phonon/experimental/CMakeLists.txt b/phonon/experimental/CMakeLists.txt
index 811450fa9a..73820596ac 100644
--- a/phonon/experimental/CMakeLists.txt
+++ b/phonon/experimental/CMakeLists.txt
@@ -1,33 +1,33 @@
 include_directories(${KDE4_KIO_INCLUDES})
 add_subdirectory( tests )
 
 ########### libphononexperimental ###############
 set(phononexperimental_LIB_SRCS
     audiodataoutput.cpp
     videodataoutput.cpp
     visualization.cpp
     mediasource.cpp
     backendcapabilities.cpp
     factory.cpp
     globalconfig.cpp
     ../abstractaudiooutput_p.cpp
     ../abstractvideooutput_p.cpp
    )
 kde4_add_library(phononexperimental SHARED ${phononexperimental_LIB_SRCS})
 target_link_libraries(phononexperimental ${KDE4_PHONON_LIBS})
 #do not use GENERIC versioning in phonon
-set_target_properties(phononexperimental PROPERTIES VERSION 5.2.0 SOVERSION 5)
+set_target_properties(phononexperimental PROPERTIES VERSION 4.2.0 SOVERSION 4)
 install(TARGETS phononexperimental  DESTINATION ${LIB_INSTALL_DIR})
 
 ########### install headers ###############
 install(FILES
     export.h
     audiodataoutput.h
     videoframe.h
     videodataoutput.h
     visualization.h
     mediasource.h
     backendcapabilities.h
     backendinterface.h
     factory.h
     DESTINATION ${INCLUDE_INSTALL_DIR}/phonon/experimental)