diff -up kde-workspace-4.10.5/kcontrol/krdb/krdb.cpp.krdb kde-workspace-4.10.5/kcontrol/krdb/krdb.cpp

--- kde-workspace-4.10.5/kcontrol/krdb/krdb.cpp.krdb	2013-06-28 19:10:44.184424737 +0200

+++ kde-workspace-4.10.5/kcontrol/krdb/krdb.cpp	2014-07-16 17:22:30.084547381 +0200

@@ -538,9 +539,9 @@ void runRdb( uint flags )

   KProcess proc;

 #ifndef NDEBUG

-  proc << "xrdb" << "-merge" << tmpFile.fileName();

+  proc << "xrdb" << "-cpp" << "/bin/cpp" << "-merge" << tmpFile.fileName();

 #else

-  proc << "xrdb" << "-quiet" << "-merge" << tmpFile.fileName();

+  proc << "xrdb" << "-cpp" << "/bin/cpp" << "-quiet" << "-merge" << tmpFile.fileName();

 #endif

   proc.execute();