diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index dc5765b62b87eabe461366e7aaad4f3ef1130d1b..b481a4d780c239f229d9d28aae7c0239fc589f76 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -853,3 +853,4 @@ int __init sit_init(void)
 
 module_init(sit_init);
 module_exit(sit_cleanup);
+MODULE_LICENSE("GPL");