diff --git a/setup/installer/windows/freeze.py b/setup/installer/windows/freeze.py
index 0b04cc11cc..29809907ab 100644
--- a/setup/installer/windows/freeze.py
+++ b/setup/installer/windows/freeze.py
@@ -13,7 +13,7 @@ from setup import Command, modules, functions, basenames, __version__, \
 from setup.build_environment import msvc, MT, RC
 from setup.installer.windows.wix import WixMixIn
 
-QT_DIR = 'C:\\Qt\\4.6.0'
+QT_DIR = 'C:\\Qt\\4.6.3'
 QT_DLLS = ['Core', 'Gui', 'Network', 'Svg', 'WebKit', 'Xml', 'XmlPatterns']
 LIBUSB_DIR       = 'C:\\libusb'
 LIBUNRAR         = 'C:\\Program Files\\UnrarDLL\\unrar.dll'