diff --git a/include/haproxy/stconn.h b/include/haproxy/stconn.h
index 9a61d6f527..53f761a289 100644
--- a/include/haproxy/stconn.h
+++ b/include/haproxy/stconn.h
@@ -490,8 +490,8 @@ static inline size_t se_nego_ff(struct sedesc *se, struct buffer *input, size_t
 
 		se->iobuf.flags &= ~(IOBUF_FL_FF_BLOCKED|IOBUF_FL_FF_WANT_ROOM);
 		if (mux->nego_fastfwd && mux->done_fastfwd) {
-			/* Disable zero-copy forwarding if EOS or an error was reported. */
-			if (se_fl_test(se, SE_FL_EOS|SE_FL_ERROR|SE_FL_ERR_PENDING)) {
+			/* Disable zero-copy forwarding if an error was reported. */
+			if (se_fl_test(se, SE_FL_ERROR|SE_FL_ERR_PENDING)) {
 				se->iobuf.flags |= IOBUF_FL_NO_FF;
 				goto end;
 			}