diff --git a/src/testdir/test_vim9_disassemble.vim b/src/testdir/test_vim9_disassemble.vim
index 3747ad5..66ac954 100644
--- a/src/testdir/test_vim9_disassemble.vim
+++ b/src/testdir/test_vim9_disassemble.vim
@@ -788,6 +788,28 @@
         instr)
 enddef
 
+def LambdaWithType(): number
+  var Ref = {a: number -> a + 10}
+  return Ref(g:value)
+enddef
+
+def Test_disassemble_lambda_with_type()
+  g:value = 5
+  assert_equal(15, LambdaWithType())
+  var instr = execute('disassemble LambdaWithType')
+  assert_match('LambdaWithType\_s*' ..
+        'var Ref = {a: number -> a + 10}\_s*' ..
+        '\d FUNCREF <lambda>\d\+\_s*' ..
+        '\d STORE $0\_s*' ..
+        'return Ref(g:value)\_s*' ..
+        '\d LOADG g:value\_s*' ..
+        '\d LOAD $0\_s*' ..
+        '\d CHECKTYPE number stack\[-2\]\_s*' ..
+        '\d PCALL (argc 1)\_s*' ..
+        '\d RETURN',
+        instr)
+enddef
+
 def NestedOuter()
   def g:Inner()
     echomsg "inner"
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 113e99e..a3f2149 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -322,8 +322,6 @@
   CheckDefFailure(['bufnr(xxx)'], 'E1001:')
   CheckScriptFailure(['def Func(Ref: func(s: string))'], 'E475:')
 
-  CheckDefFailure(['echo {i -> 0}()'], 'E119: Not enough arguments for function: {i -> 0}()')
-
   var lines =<< trim END
     vim9script
     def Func(s: string)
@@ -378,6 +376,17 @@
   delete('Xscript')
 enddef
 
+def Test_call_lambda_args()
+  CheckDefFailure(['echo {i -> 0}()'],
+                  'E119: Not enough arguments for function: {i -> 0}()')
+
+  var lines =<< trim END
+      var Ref = {x: number, y: number -> x + y}
+      echo Ref(1, 'x')
+  END
+  CheckDefFailure(lines, 'E1013: Argument 2: type mismatch, expected number but got string')
+enddef
+
 " Default arg and varargs
 def MyDefVarargs(one: string, two = 'foo', ...rest: list<string>): string
   var res = one .. ',' .. two