Cannot build debugging helpers in path with spaces

When Qt is installed in path with spaces, it fails. Please note "C:\Program Files\" is not taken a a whole but split in "C:\Program" and "Files", which makes compilation fail due to missing headers:

C:\Qt\qtcreator-2.1.81\bin\jom.exe -nologo -j 2 -f Makefile.Release
cl c -nologo -Zm200 -Zc:wchar_t -O2 -MD -GR -EHsc -GL -W3 -w34100 -w34189 -DUNICODE -DWIN32 -DQT_LARGEFILE_SUPPORT -DUSE_QT_GUI=1 -DQT_DLL -DQT_NO_DEBUG -DQT_GUI_LIB -DQT_CORE_LIB -DQT_HAVE_MMX -DQT_HAVE_3DNOW -DQT_HAVE_SSE -DQT_HAVE_MMXEXT -DQT_HAVE_SSE2 -DQT_THREAD_SUPPORT -I"c:\program" -I"files\kde\bin\..\include\QtCore" -I"files\kde\bin\..\include\QtGui" -I"files\kde\bin\..\include" -I"files\kde\bin\..\include\ActiveQt" -I"release" -I"..\mkspecs\default" -Forelease\ @C:\DOCUME~1\PGQUIL~2.ARI\LOCALS~1\Temp\gdbmacros.obj.972.0.jom

Qt is installed in "C:\Program Files\KDE{bin,include,lib,share...}"