diff --git a/include/types/hlua.h b/include/types/hlua.h
index d2aaa4a..42cfe3b 100644
--- a/include/types/hlua.h
+++ b/include/types/hlua.h
@@ -90,6 +90,7 @@
 struct hlua_function {
 	char *name;
 	int function_ref;
+	int nargs;
 };
 
 /* This struct is used with the structs: