diff --git a/src/testdir/test_digraph.vim b/src/testdir/test_digraph.vim
index 16eb0b1..88b8ded 100644
--- a/src/testdir/test_digraph.vim
+++ b/src/testdir/test_digraph.vim
@@ -605,8 +605,10 @@
   " of digraphs returned.
   call assert_equal(digraph_getlist()->len(), digraph_getlist(0)->len())
   call assert_notequal(digraph_getlist()->len(), digraph_getlist(1)->len())
+  call assert_equal(digraph_getlist()->len(), digraph_getlist(v:false)->len())
+  call assert_notequal(digraph_getlist()->len(), digraph_getlist(v:true)->len())
 
-  call assert_fails('call digraph_getlist(0z12)', 'E974: Using a Blob as a Number')
+  call assert_fails('call digraph_getlist(0z12)', 'E1212: Bool required for argument 1')
 endfunc
 
 
diff --git a/src/testdir/test_vim9_builtin.vim b/src/testdir/test_vim9_builtin.vim
index 7ed9123..6103453 100644
--- a/src/testdir/test_vim9_builtin.vim
+++ b/src/testdir/test_vim9_builtin.vim
@@ -963,6 +963,18 @@
 def Test_digraph_getlist()
   v9.CheckSourceDefAndScriptFailure(['digraph_getlist(10)'], ['E1013: Argument 1: type mismatch, expected bool but got number', 'E1212: Bool required for argument 1'])
   v9.CheckSourceDefAndScriptFailure(['digraph_getlist("")'], ['E1013: Argument 1: type mismatch, expected bool but got string', 'E1212: Bool required for argument 1'])
+
+  var lines =<< trim END
+    var l = digraph_getlist(true)
+    assert_notequal([], l)
+    l = digraph_getlist(false)
+    assert_equal([], l)
+    l = digraph_getlist(1)
+    assert_notequal([], l)
+    l = digraph_getlist(0)
+    assert_equal([], l)
+  END
+  v9.CheckSourceDefAndScriptSuccess(lines)
 enddef
 
 def Test_digraph_set()