diff --git a/include/haproxy/sink-t.h b/include/haproxy/sink-t.h
index b5138c85d..79a0ddade 100644
--- a/include/haproxy/sink-t.h
+++ b/include/haproxy/sink-t.h
@@ -54,7 +54,7 @@ struct sink {
 	enum log_fmt fmt;          // format expected by the sink
 	enum sink_type type;       // type of storage
 	uint32_t maxlen;           // max message length (truncated above)
-	struct proxy* forward_px;  // proxy used to forward
+	struct proxy* forward_px;  // internal proxy used to forward (only set when exclusive to sink)
 	struct sink_forward_target *sft; // sink forward targets
 	struct task *forward_task; // task to handle forward targets conns
 	struct sig_handler *forward_sighandler; /* signal handler */
diff --git a/src/sink.c b/src/sink.c
index ae64b5537..d456ca20f 100644
--- a/src/sink.c
+++ b/src/sink.c
@@ -588,7 +588,7 @@ static int sink_forward_session_init(struct appctx *appctx)
 	if (!sockaddr_alloc(&addr, &sft->srv->addr, sizeof(sft->srv->addr)))
 		goto out_error;
 
-	if (appctx_finalize_startup(appctx, sft->sink->forward_px, &BUF_NULL) == -1)
+	if (appctx_finalize_startup(appctx, sft->srv->proxy, &BUF_NULL) == -1)
 		goto out_free_addr;
 
 	s = appctx_strm(appctx);
@@ -803,7 +803,9 @@ static void sink_free(struct sink *sink)
 }
 
 /* Helper function to create new high-level ring buffer (as in ring section from
- * the config)
+ * the config): will create a new sink of buf type, and a new forward proxy,
+ * which will be stored in forward_px to know that the sink is responsible for
+ * it.
  *
  * Returns NULL on failure
  */