diff -ruN kfax-3.3.6-kde4.4.0.orig/CMakeLists.txt kfax-3.3.6-kde4.4.0/CMakeLists.txt
--- kfax-3.3.6-kde4.4.0.orig/CMakeLists.txt	2010-02-11 21:59:47.000000000 +0100
+++ kfax-3.3.6-kde4.4.0/CMakeLists.txt	2011-08-11 21:33:15.262295828 +0200
@@ -12,7 +12,7 @@
 
 kde4_add_executable(kfax ${kfax_SRCS})
 
-target_link_libraries(kfax  ${KDE4_KIO_LIBS} ${QT_QT3SUPPORT_LIBRARY} )
+target_link_libraries(kfax  ${KDE4_KIO_LIBS} ${QT_QT3SUPPORT_LIBRARY} ${X11_LIBRARIES})
 
 install(TARGETS kfax  ${INSTALL_TARGETS_DEFAULT_ARGS} )