diff --git a/src/backends/qalculate/CMakeLists.txt b/src/backends/qalculate/CMakeLists.txt
index 1e75a848..30d2367a 100644
--- a/src/backends/qalculate/CMakeLists.txt
+++ b/src/backends/qalculate/CMakeLists.txt
@@ -1,27 +1,31 @@
 add_subdirectory(plotassistant)
 project(cantor-qalculate-backend)
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${KDE4_ENABLE_EXCEPTIONS} -Wno-deprecated")
 add_definitions(${QALCULATE_CFLAGS})
 
 set( QalculateBackend_SRCS
 qalculatesyntaxhelpobject.cpp
 qalculatebackend.cpp
 qalculatesession.cpp
 qalculatehighlighter.cpp
 qalculateexpression.cpp
 qalculateextensions.cpp
 qalculatecompletionobject.cpp
 qalculateextensions.cpp
 )
 
 kconfig_add_kcfg_files(QalculateBackend_SRCS settings.kcfgc)
 install(FILES qalculatebackend.kcfg DESTINATION ${KDE_INSTALL_KCFGDIR})
 
 ki18n_wrap_ui(QalculateBackend_SRCS settings.ui)
 
 add_backend(qalculatebackend ${QalculateBackend_SRCS})
 
-target_link_libraries( cantor_qalculatebackend cantorlibs ${QALCULATE_LIBRARIES} )
+if (QALCULATE_VERSION VERSION_LESS 2.0.0)
+    target_link_libraries( cantor_qalculatebackend cantorlibs ${QALCULATE_LIBRARIES} ${CLN_LIBRARIES})
+else()
+    target_link_libraries( cantor_qalculatebackend cantorlibs ${QALCULATE_LIBRARIES})
+endif()
 
 install( FILES cantor_qalculate.knsrc  DESTINATION  ${KDE_INSTALL_CONFDIR} )