diff --git a/sys/netinet/cc/cc.c b/sys/netinet/cc/cc.c
--- a/sys/netinet/cc/cc.c
+++ b/sys/netinet/cc/cc.c
@@ -401,13 +401,8 @@
 		 * approximately snd_ssthresh outstanding data. But in case we
 		 * would be inclined to send a burst, better to do it via the
 		 * slow start mechanism.
-		 *
-		 * XXXLAS: Find a way to do this without needing curack
 		 */
-		if (V_tcp_do_newsack)
-			pipe = tcp_compute_pipe(ccv->tp);
-		else
-			pipe = CCV(ccv, snd_max) - ccv->curack;
+		pipe = tcp_compute_pipe(ccv->tp);
 		if (pipe < CCV(ccv, snd_ssthresh))
 			/*
 			 * Ensure that cwnd does not collapse to 1 MSS under
diff --git a/sys/netinet/cc/cc_cubic.c b/sys/netinet/cc/cc_cubic.c
--- a/sys/netinet/cc/cc_cubic.c
+++ b/sys/netinet/cc/cc_cubic.c
@@ -530,14 +530,8 @@
 		 * If inflight data is less than ssthresh, set cwnd
 		 * conservatively to avoid a burst of data, as suggested in
 		 * the NewReno RFC. Otherwise, use the CUBIC method.
-		 *
-		 * XXXLAS: Find a way to do this without needing curack
 		 */
-		if (V_tcp_do_newsack)
-			pipe = tcp_compute_pipe(ccv->tp);
-		else
-			pipe = CCV(ccv, snd_max) - ccv->curack;
-
+		pipe = tcp_compute_pipe(ccv->tp);
 		if (pipe < CCV(ccv, snd_ssthresh))
 			/*
 			 * Ensure that cwnd does not collapse to 1 MSS under
diff --git a/sys/netinet/cc/cc_htcp.c b/sys/netinet/cc/cc_htcp.c
--- a/sys/netinet/cc/cc_htcp.c
+++ b/sys/netinet/cc/cc_htcp.c
@@ -375,14 +375,8 @@
 		 * If inflight data is less than ssthresh, set cwnd
 		 * conservatively to avoid a burst of data, as suggested in the
 		 * NewReno RFC. Otherwise, use the HTCP method.
-		 *
-		 * XXXLAS: Find a way to do this without needing curack
 		 */
-		if (V_tcp_do_newsack)
-			pipe = tcp_compute_pipe(ccv->tp);
-		else
-			pipe = CCV(ccv, snd_max) - ccv->curack;
-
+		pipe = tcp_compute_pipe(ccv->tp);
 		if (pipe < CCV(ccv, snd_ssthresh))
 			/*
 			 * Ensure that cwnd down not collape to 1 MSS under