diff --git a/stepmania/src/LuaHelpers.h b/stepmania/src/LuaHelpers.h
index ae02701698..a56f84dfb4 100644
--- a/stepmania/src/LuaHelpers.h
+++ b/stepmania/src/LuaHelpers.h
@@ -39,9 +39,6 @@ public:
 	void SetGlobal( const CString &sName );
 
 private:
-	/* Register all functions in g_LuaFunctionList. */
-	void RegisterFunctions();
-
 	/* Run an expression.  The result is left on the Lua stack. */
 	bool RunExpression( const CString &str );
 	lua_State *L;