--- cmake/OpenCVFindLibsGUI.cmake	2013-09-23 16:38:03.000000000 +0200
+++ cmake/OpenCVFindLibsGUI.cmake.new	2013-09-23 16:37:53.000000000 +0200
@@ -32,6 +32,18 @@
   endif()
 
   if(NOT HAVE_QT)
+    unset(QT_MOC_EXECUTABLE)
+    unset(QT_UIC_EXECUTABLE)
+    unset(QT_UIC3_EXECUTABLE)
+    unset(QT_RCC_EXECUTABLE)
+    unset(QT_DBUSCPP2XML_EXECUTABLE)
+    unset(QT_DBUSXML2CPP_EXECUTABLE)
+    unset(QT_LUPDATE_EXECUTABLE)
+    unset(QT_LRELEASE_EXECUTABLE)
+    unset(QT_QCOLLECTIONGENERATOR_EXECUTABLE)
+    unset(QT_DESIGNER_EXECUTABLE)
+    unset(QT_LINGUIST_EXECUTABLE)
+
     find_package(Qt4 REQUIRED QtCore QtGui QtTest)
     if(QT4_FOUND)
       set(HAVE_QT TRUE)