diff --git a/test/old/testdir/test_execute_func.vim b/test/old/testdir/test_execute_func.vim
index 1f6492b994..1b3e8ba314 100644
--- a/test/old/testdir/test_execute_func.vim
+++ b/test/old/testdir/test_execute_func.vim
@@ -45,7 +45,7 @@ func Test_execute_string()
   if has('float')
     call assert_fails('call execute(3.4)', 'E492:')
     call assert_equal("\nx", execute("echo \"x\"", 3.4))
-    call CheckDefExecAndScriptFailure(['execute("echo \"x\"", 3.4)'], 'E806:')
+    call CheckDefExecAndScriptFailure2(['execute("echo \"x\"", 3.4)'], 'E1013: Argument 2: type mismatch, expected string but got float', 'E806:')
   endif
 endfunc
 
diff --git a/test/old/testdir/vim9.vim b/test/old/testdir/vim9.vim
index 1a4ade3417..66e157cfa2 100644
--- a/test/old/testdir/vim9.vim
+++ b/test/old/testdir/vim9.vim
@@ -58,6 +58,11 @@ func CheckDefExecAndScriptFailure(lines, error, lnum = -3)
   return
 endfunc
 
+" As CheckDefExecAndScriptFailure() but with two different expected errors.
+func CheckDefExecAndScriptFailure2(lines, errorDef, errorScript, lnum = -3)
+  return
+endfunc
+
 " Check that "lines" inside a legacy function has no error.
 func CheckLegacySuccess(lines)
   let cwd = getcwd()