diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 7bc46d8..c9f9027 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -831,7 +831,7 @@
 " recognized.
 func Test_function_python()
   CheckFeature python3
-  var py = 'python3'
+  let py = 'python3'
   execute py "<< EOF"
 def do_something():
   return 1