diff --git a/frontend/CMakeLists.txt b/frontend/CMakeLists.txt
index fa638778..9ca9ad28 100644
--- a/frontend/CMakeLists.txt
+++ b/frontend/CMakeLists.txt
@@ -4,7 +4,7 @@ project(zint_frontend)
 
 set(zint_frontend_SRCS main.c )
 
-include_directories(BEFORE ../backend)
+include_directories(BEFORE "${CMAKE_SOURCE_DIR}/backend")
 
 add_executable(zint_frontend ${zint_frontend_SRCS})
 
@@ -12,6 +12,6 @@ set_target_properties(zint_frontend PROPERTIES   OUTPUT_NAME "zint")
 
 add_dependencies(zint_frontend zint)
 
-link_directories( "../backend" )
+link_directories( "${CMAKE_BINARY_DIR}/backend" )
 
 target_link_libraries(zint_frontend zint)
diff --git a/frontend_qt4/CMakeLists.txt b/frontend_qt4/CMakeLists.txt
index eb4b3d7c..871aed4f 100644
--- a/frontend_qt4/CMakeLists.txt
+++ b/frontend_qt4/CMakeLists.txt
@@ -2,16 +2,16 @@
 
 project(QZint_frontend)
 
-include_directories(BEFORE ../backend ../backend_qt4)
+include_directories(BEFORE "${CMAKE_SOURCE_DIR}/backend"  "${CMAKE_SOURCE_DIR}/backend_qt4")
 
 set(QZint_frontend_SRCS barcodeitem.cpp  main.cpp  mainwindow.cpp)
-QT4_WRAP_CPP(QZint_frontend_SRCS barcodeitem.h  mainwindow.h)
+QT4_WRAP_CPP(QZint_frontend_SRCS mainwindow.h)
 QT4_WRAP_UI(QZint_frontend_SRCS mainWindow.ui)
 
 add_executable(QZint_frontend ${QZint_frontend_SRCS})
 add_dependencies(QZint_frontend QZint zint)
 
-link_directories( "../backend" "../backend_qt4" )
+link_directories( "${CMAKE_BINARY_DIR}/backend" "${CMAKE_BINARY_DIR}/backend_qt4" )
 
 target_link_libraries(QZint_frontend zint QZint ${QT_QTGUI_LIBRARY} 
      ${QT_QTCORE_LIBRARY} )