Index: uspace/lib/c/generic/inet/tcp.c
===================================================================
--- uspace/lib/c/generic/inet/tcp.c	(revision c6ac9a55ddd97419270882b68a9ce2641e635455)
+++ uspace/lib/c/generic/inet/tcp.c	(revision d2e0af475248fbaed0e492a9193a1c189871e3f1)
@@ -455,12 +455,11 @@
 	exch = async_exchange_begin(conn->tcp->sess);
 	aid_t req = async_send_1(exch, TCP_CONN_SEND, conn->id, NULL);
-
 	rc = async_data_write_start(exch, data, bytes);
+	async_exchange_end(exch);
+
 	if (rc != EOK) {
 		async_forget(req);
 		return rc;
 	}
-
-	async_exchange_end(exch);
 
 	if (rc != EOK) {