diff --git a/CMakeLists.txt b/CMakeLists.txt
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -28,7 +28,7 @@ set(datadir ${CMAKE_INSTALL_PREFIX}/shar
 set(localedir ${CMAKE_INSTALL_PREFIX}/share/locale)
 set(includedir  ${CMAKE_INSTALL_PREFIX}/include/googlepinyin)
 set(CMAKE_C_FLAGS "-Wall ${CMAKE_C_FLAGS}")
-set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--no-undefined ${CMAKE_SHARED_LINKER_FLAG}")
+set(CMAKE_SHARED_LINKER_FLAGS "-Wl,--no-undefined ${CMAKE_SHARED_LINKER_FLAGS}")
 
 add_subdirectory(src)
 add_subdirectory(tools)