diff --git a/core.js b/core.js
index <HASH>..<HASH> 100644
--- a/core.js
+++ b/core.js
@@ -17,6 +17,7 @@ var ffi = require('node-ffi')
     , class_getName: [ 'string', [ 'pointer' ] ]
     , class_getSuperclass: [ 'pointer', [ 'pointer' ] ]
     , class_getVersion: [ 'pointer', [ 'pointer' ] ]
+    , class_isMetaClass: [ 'uint8', [ 'pointer' ] ]
     , method_getName: [ 'pointer', [ 'pointer' ] ]
     , method_copyReturnType: [ 'pointer', [ 'pointer' ] ]
     , method_copyArgumentType: [ 'pointer', [ 'pointer', 'uint32' ] ]
Add 'class_isMetaClass' to core.js.