diff --git a/data/CMakeLists.txt b/data/CMakeLists.txt
index 9446fc8951..8b88ced64a 100644
--- a/data/CMakeLists.txt
+++ b/data/CMakeLists.txt
@@ -28,7 +28,7 @@ install(TARGETS kwin_update_default_rules DESTINATION ${LIB_INSTALL_DIR}/kconf_u
 
 ########### install files ###############
 
-install( FILES fsp_workarounds_1  DESTINATION  ${DATA_INSTALL_DIR}/kwin/default_rules )
+install( FILES fsp_workarounds_1.kwinrules  DESTINATION  ${DATA_INSTALL_DIR}/kwin/default_rules )
 install( FILES pop.wav  DESTINATION  ${SOUND_INSTALL_DIR} )
 install( FILES kwin.upd kwinsticky.upd kwiniconify.upd kwin3_plugin.upd kwin_focus1.upd          kwinupdatewindowsettings.upd kwin_focus2.upd kwin_fsp_workarounds_1.upd  DESTINATION  ${KCONF_UPDATE_INSTALL_DIR} )
 install(PROGRAMS pluginlibFix.pl kwin3_plugin.pl kwin_focus1.sh kwin_focus2.sh  DESTINATION  ${KCONF_UPDATE_INSTALL_DIR} )
diff --git a/data/fsp_workarounds_1 b/data/fsp_workarounds_1.kwinrules
similarity index 61%
rename from data/fsp_workarounds_1
rename to data/fsp_workarounds_1.kwinrules
index 37948fea52..771ef8bf20 100644
--- a/data/fsp_workarounds_1
+++ b/data/fsp_workarounds_1.kwinrules
@@ -1,5 +1,5 @@
 [1]
-description=(Default) Disable focus stealing prevention for XV
+Description=(Default) Disable focus stealing prevention for XV
 fsplevel=0
 fsplevelrule=2
 wmclass=^xv .*
diff --git a/data/kwin_fsp_workarounds_1.upd b/data/kwin_fsp_workarounds_1.upd
index 18e7460ff4..2d725d2d24 100644
--- a/data/kwin_fsp_workarounds_1.upd
+++ b/data/kwin_fsp_workarounds_1.upd
@@ -4,5 +4,5 @@ Id=kde351
 File=kwinrules_update
 Group=Dummy
 Options=overwrite
-ScriptArguments=fsp_workarounds_1
+ScriptArguments=fsp_workarounds_1.kwinrules
 Script=kwin_update_default_rules
diff --git a/rules.cpp b/rules.cpp
index 60fe9c7933..dad0d30790 100644
--- a/rules.cpp
+++ b/rules.cpp
@@ -113,7 +113,9 @@ static int limit0to4( int i ) { return qMax( 0, qMin( 4, i )); }
 
 void Rules::readFromCfg( const KConfigGroup& cfg )
     {
-    description = cfg.readEntry( "description" );
+    description = cfg.readEntry( "Description" );
+    if( description.isEmpty()) // capitalized first, lowercase for backwards compatibility
+        description = cfg.readEntry( "description" );
     READ_MATCH_STRING( wmclass, .toLower().toLatin1() );
     wmclasscomplete = cfg.readEntry( "wmclasscomplete" , false);
     READ_MATCH_STRING( windowrole, .toLower().toLatin1() );
@@ -204,7 +206,7 @@ void Rules::readFromCfg( const KConfigGroup& cfg )
 
 void Rules::write( KConfigGroup& cfg ) const
     {
-    cfg.writeEntry( "description", description );
+    cfg.writeEntry( "Description", description );
     // always write wmclass
     WRITE_MATCH_STRING( wmclass, (const char*), true );
     cfg.writeEntry( "wmclasscomplete", wmclasscomplete );