--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -297,7 +297,7 @@
 # -------------------------------
 
 IF ( WITH_LUA )
-  FIND_PACKAGE(Lua)
+  FIND_PACKAGE(Lua ${LUA_VERSION} EXACT REQUIRED)
 ENDIF()
 
 IF ( WITH_PYTHON )