diff --git a/libs/sofia-sip/.update b/libs/sofia-sip/.update
index 480587cae3..207a8106df 100644
--- a/libs/sofia-sip/.update
+++ b/libs/sofia-sip/.update
@@ -1 +1 @@
-Thu Jun  1 14:43:20 EDT 2017
+Tue Jun  6 09:36:46 CDT 2017
diff --git a/libs/sofia-sip/libsofia-sip-ua/msg/msg_parser.c b/libs/sofia-sip/libsofia-sip-ua/msg/msg_parser.c
index 48c30d46ec..16a3daa4f8 100644
--- a/libs/sofia-sip/libsofia-sip-ua/msg/msg_parser.c
+++ b/libs/sofia-sip/libsofia-sip-ua/msg/msg_parser.c
@@ -2017,7 +2017,7 @@ msg_header_t **serialize_one(msg_t *msg, msg_header_t *h, msg_header_t **prev)
     for (last = h; last->sh_succ; last = last->sh_succ) {
       /* Ensure that chain is connected */
       assert(last->sh_next == last->sh_succ);
-      assert(last->sh_succ->sh_prev = &last->sh_succ);
+      assert(last->sh_succ->sh_prev == &last->sh_succ);
     }
     prev = &last->sh_succ;
   }