diff --git a/CMakeLists.txt b/CMakeLists.txt
index 33078b4..1a6ad2e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,7 @@ set(COMPILE_RUBY FALSE CACHE INTERNAL "")
 find_package(Ruby REQUIRED)
 find_package(Qt4 REQUIRED)
 find_package(Smoke COMPONENTS QtCore QtGui QtXml QtOpenGl QtSql QtNetwork QtDbus QtSvg Phonon QSci QtDeclarative QtScript QtWebkit QtUiTools QtTest Qwt)
-include_directories(${SMOKE_INCLUDE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/src ${QT_INCLUDES})
+include_directories(${SMOKE_INCLUDE_DIR} ${SMOKE_QTCORE_INCLUDE_DIR} ${CMAKE_CURRENT_SOURCE_DIR}/src ${QT_INCLUDES})
 
 set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} ${SMOKE_CMAKE_MODULE_DIR})
 include(MacroOptionalFindPackage)
