diff --git a/ip/iplink.c b/ip/iplink.c
index 6379b16a..62bf713d 100644
--- a/ip/iplink.c
+++ b/ip/iplink.c
@@ -853,7 +853,8 @@ int iplink_parse(int argc, char **argv, struct iplink_req *req,
 			unsigned int max_size;
 
 			NEXT_ARG();
-			if (get_unsigned(&max_size, *argv, 0) || max_size > UINT16_MAX)
+			if (get_unsigned(&max_size, *argv, 0) ||
+				max_size > UINT16_MAX + 1)
 				invarg("Invalid \"gso_max_size\" value\n",
 				       *argv);
 			addattr32(&req->n, sizeof(*req), IFLA_GSO_MAX_SIZE, max_size);
diff --git a/man/man8/ip-link.8.in b/man/man8/ip-link.8.in
index 0db2582e..40f09b30 100644
--- a/man/man8/ip-link.8.in
+++ b/man/man8/ip-link.8.in
@@ -36,7 +36,7 @@ ip-link \- network device configuration
 .RB "[ " numrxqueues
 .IR QUEUE_COUNT " ]"
 .br
-.BR "[" gso_max_size
+.BR "[ " gso_max_size
 .IR BYTES " ]"
 .RB "[ " gso_max_segs
 .IR SEGMENTS " ]"