diff --git a/src/testdir/test1.in b/src/testdir/test1.in
index 6d1bdde..bdcc01d 100644
--- a/src/testdir/test1.in
+++ b/src/testdir/test1.in
@@ -13,6 +13,7 @@
 
 If Vim was not compiled with the +multi_byte feature, the mbyte.vim script will be set like small.vim above.  mbyte.vim is sourced by tests that require the
 +multi_byte feature.
+Similar logic is applied to the +mzscheme feature, using mzscheme.vim.
 
 STARTTEST
 :" Write a single line to test.out to check if testing works at all.
@@ -25,8 +26,11 @@
 w! test.out
 qa!
 :w! mbyte.vim
+:w! mzscheme.vim
 :" If +multi_byte feature supported, make mbyte.vim empty.
 :if has("multi_byte") | sp another | w! mbyte.vim | q | endif
+:" If +mzscheme feature supported, make mzscheme.vim empty.
+:if has("mzscheme") | sp another | w! mzscheme.vim | q | endif
 :" If +eval feature supported quit here, leaving tiny.vim and small.vim empty.
 :" Otherwise write small.vim to skip the test.
 :if 1 | q! | endif