diff --git a/src/testdir/test104.in b/src/testdir/test104.in
new file mode 100644
index 0000000..f329d2d
--- /dev/null
+++ b/src/testdir/test104.in
@@ -0,0 +1,16 @@
+Tests for autoload.  vim: set ft=vim ts=8 :
+
+STARTTEST
+:so small.vim
+:set runtimepath+=./sautest
+:" Test to not autoload when assigning.  It causes internal error.
+:try
+:  let Test104#numvar = function('tr')
+:  $put ='OK: ' . string(Test104#numvar)
+:catch
+:  $put ='FAIL: ' . v:exception
+:endtry
+:/^Results/,$wq! test.out
+ENDTEST
+
+Results of test104: