diff --git a/doc/bird.sgml b/doc/bird.sgml
index 045aa88c..de7f8f9d 100644
--- a/doc/bird.sgml
+++ b/doc/bird.sgml
@@ -1715,7 +1715,7 @@ in the foot).
 	Prefix <cf><m>ip1</m>/<m>len1</m></cf> matches prefix
 	pattern <cf><m>ip2</m>/<m>len2</m>{<m>l</m>,<m>h</m>}</cf> if the
 	first <cf>min(len1, len2)</cf> bits of <cf/ip1/ and <cf/ip2/ are
-	identical and <cf>len1 &lt;= ip1 &lt;= len2</cf>. A valid prefix pattern
+	identical and <cf>l &lt;= len1 &lt;= h</cf>. A valid prefix pattern
 	has to satisfy <cf>low &lt;= high</cf>, but <cf/pxlen/ is not
 	constrained by <cf/low/ or <cf/high/. Obviously, a prefix matches a
 	prefix set literal if it matches any prefix pattern in the prefix set
diff --git a/nest/rt-attr.c b/nest/rt-attr.c
index 7beb119b..25936d81 100644
--- a/nest/rt-attr.c
+++ b/nest/rt-attr.c
@@ -1264,7 +1264,7 @@ rta__free(rta *a)
 rta *
 rta_do_cow(rta *o, linpool *lp)
 {
-  rta *r = lp_alloc(lp, rta_size(o));
+  rta *r = lp_alloc(lp, RTA_MAX_SIZE);
   memcpy(r, o, rta_size(o));
   for (struct nexthop **nhn = &(r->nh.next), *nho = o->nh.next; nho; nho = nho->next)
     {