diff --git a/src/testdir/test_charsearch.vim b/src/testdir/test_charsearch.vim
index 06b8ff6..142e6c8 100644
--- a/src/testdir/test_charsearch.vim
+++ b/src/testdir/test_charsearch.vim
@@ -39,7 +39,7 @@
   call setcharsearch({'char' : ''})
   call assert_equal('', getcharsearch().char)
 
-  call assert_fails("call setcharsearch([])", 'E715:')
+  call assert_fails("call setcharsearch([])", 'E1206:')
   enew!
 endfunc