diff --git a/src/or/routerlist.c b/src/or/routerlist.c
index 2a81cb2cc3..f6237413f4 100644
--- a/src/or/routerlist.c
+++ b/src/or/routerlist.c
@@ -1263,11 +1263,11 @@ exit_policy_implicitly_allows_local_networks(addr_policy_t *policy,
   static struct {
     uint32_t addr; uint32_t mask; const char *network;
   } private_networks[] = {
-    { 0x7f000000, 0xff000000, "localhost (127.x)" },
-    { 0x0a000000, 0xff000000, "addresses in private network 10.x" },
-    { 0xa9fe0000, 0xffff0000, "addresses in private network 169.254.x" },
-    { 0xac100000, 0xfff00000, "addresses in private network 172.16.x" },
-    { 0xc0a80000, 0xffff0000, "addresses in private network 192.168.x" },
+    { 0x7f000000, 0xff000000, "localhost (127.0.0.0/8)" },
+    { 0x0a000000, 0xff000000, "addresses in private network 10.0.0.0/8" },
+    { 0xa9fe0000, 0xffff0000, "addresses in private network 169.254.0.0/16" },
+    { 0xac100000, 0xfff00000, "addresses in private network 172.16.0.0/12" },
+    { 0xc0a80000, 0xffff0000, "addresses in private network 192.168.0.0/16" },
     { 0,0,NULL},
   };
   for (i=0; private_networks[i].addr; ++i) {