diff --git a/net/core/filter.c b/net/core/filter.c
index 423f47db84c6..151aa4756bd6 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -6463,8 +6463,6 @@ static struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple,
 
 /* bpf_skc_lookup performs the core lookup for different types of sockets,
  * taking a reference on the socket if it doesn't have the flag SOCK_RCU_FREE.
- * Returns the socket as an 'unsigned long' to simplify the casting in the
- * callers to satisfy BPF_CALL declarations.
  */
 static struct sock *
 __bpf_skc_lookup(struct sk_buff *skb, struct bpf_sock_tuple *tuple, u32 len,