--- a/tests/test-topic-stack.t	Tue Sep 03 13:02:20 2019 +0700
+++ b/tests/test-topic-stack.t	Fri Sep 06 12:16:34 2019 +0700
@@ -794,7 +794,7 @@
 
   $ hg stack red
   ### topic: red
-  ### target: default (branch), ambiguous rebase destination - topic 'red' has 3 heads
+  ### target: default (branch), 7 behind
   s5$ c_H (orphan)
     ^ c_G
     ^ c_D
@@ -868,7 +868,7 @@
 
   $ hg stack red
   ### topic: red
-  ### target: default (branch), ambiguous rebase destination - topic 'red' has 3 heads
+  ### target: default (branch), 7 behind
   s5$ c_H (orphan)
     ^ c_G
     ^ c_D