diff --git a/src/testdir/test_blob.vim b/src/testdir/test_blob.vim
index f0e8209..a4a567d 100644
--- a/src/testdir/test_blob.vim
+++ b/src/testdir/test_blob.vim
@@ -35,7 +35,7 @@
       call assert_fails('VAR b = 0z1.1')
       call assert_fails('VAR b = 0z.')
       call assert_fails('VAR b = 0z001122.')
-      call assert_fails('call get("", 1)', 'E896:')
+      call assert_fails('call get("", 1)', 'E1531:')
       call assert_equal(0, len(test_null_blob()))
       call assert_equal(0z, copy(test_null_blob()))
   END
@@ -786,6 +786,7 @@
 
 func Test_blob_repeat()
   call assert_equal(0z, repeat(0z00, 0))
+  call assert_equal(0z, repeat(0z, 1))
   call assert_equal(0z00, repeat(0z00, 1))
   call assert_equal(0z0000, repeat(0z00, 2))
   call assert_equal(0z00000000, repeat(0z0000, 2))