--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -107,7 +107,7 @@
       include_directories(${LUAJIT_INCLUDE_DIR})
       link_directories(${LUAJIT_LIBRARIES})
     else (USE_LUAJIT)
-      find_package(Lua REQUIRED)
+      find_package(Lua ${LUA_VERSION} EXACT REQUIRED)
       include_directories(${LUA_INCLUDE_DIR})
     endif (USE_LUAJIT)