diff --git a/ksmserver/CMakeLists.txt b/ksmserver/CMakeLists.txt
--- a/ksmserver/CMakeLists.txt
+++ b/ksmserver/CMakeLists.txt
@@ -2,7 +2,7 @@
 
 include_directories(${PHONON_INCLUDE_DIR})
 
-check_library_exists(ICE _IceTransNoListen "" HAVE__ICETRANSNOLISTEN)
+check_library_exists("${X11_ICE_LIB}" _IceTransNoListen "" HAVE__ICETRANSNOLISTEN)
 configure_file(config-ksmserver.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/config-ksmserver.h)
 
 add_definitions("-DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_TO_ASCII")