diff --git a/src/testdir/test_vim9_assign.vim b/src/testdir/test_vim9_assign.vim
index 744fc5e..79c08d3 100644
--- a/src/testdir/test_vim9_assign.vim
+++ b/src/testdir/test_vim9_assign.vim
@@ -1993,6 +1993,12 @@
   assert_false(exists('s:somevar'))
   unlet! s:somevar
 
+  if 0
+    unlet g:does_not_exist
+  endif
+
+  v9.CheckDefExecFailure(['unlet v:notfound.key'], 'E1001:')
+
   v9.CheckDefExecFailure([
     'var dd = 111',
     'unlet dd',
diff --git a/src/testdir/test_vim9_cmd.vim b/src/testdir/test_vim9_cmd.vim
index bacf195..51a62e0 100644
--- a/src/testdir/test_vim9_cmd.vim
+++ b/src/testdir/test_vim9_cmd.vim
@@ -1449,7 +1449,7 @@
     ex = v:exception
   endtry
   assert_match('E1121:', ex)
-  unlockvar d.a
+  unlockvar d['a']
   d.a = 7
   assert_equal({a: 7, b: 5}, d)
 
diff --git a/src/testdir/test_vim9_expr.vim b/src/testdir/test_vim9_expr.vim
index cf4347c..87b8014 100644
--- a/src/testdir/test_vim9_expr.vim
+++ b/src/testdir/test_vim9_expr.vim
@@ -1833,6 +1833,7 @@
 
   v9.CheckDefAndScriptFailure(['var x = "abc'], 'E114:', 1)
   v9.CheckDefAndScriptFailure(["var x = 'abc"], 'E115:', 1)
+  v9.CheckDefFailure(["if 0", "echo 'xx", "endif"], 'E115', 2)
 enddef
 
 def Test_expr8_vimvar()