diff --git a/CMakeLists.txt b/CMakeLists.txt
index 76b91e642..2bb780eba 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -78,6 +78,9 @@ endif()
 # The Expat library is linked in statically, make the source files aware of that:
 add_definitions(-DXML_STATIC)
 
+# Let Lua use additional checks on its C API. This is only compiled into Debug builds:
+add_definitions(-DLUA_USE_APICHECK)
+
 # Self Test Mode enables extra checks at startup
 if(${SELF_TEST})
 	add_definitions(-DSELF_TEST)