Index: gnu/tests/mv/dup-source.sh
===================================================================
--- gnu.orig/tests/mv/dup-source.sh
+++ gnu/tests/mv/dup-source.sh
@@ -83,7 +83,7 @@ $i: cannot stat 'a': No such file or dir
 $i: cannot stat 'a': No such file or directory
 $i: cannot stat 'b': No such file or directory
 $i: cannot move './b' to a subdirectory of itself, 'b/b'
-$i: warning: source directory 'b' specified more than once
+$i: cannot move 'b' to a subdirectory of itself, 'b/b'
 EOF
   compare exp out || fail=1
 done