diff --git a/src/testdir/unix.vim b/src/testdir/unix.vim
index f766e74..36dd4e1 100644
--- a/src/testdir/unix.vim
+++ b/src/testdir/unix.vim
@@ -1,3 +1,5 @@
 " Settings for test script execution
 " Always use "sh", don't use the value of "$SHELL".
 set shell=sh
+
+source setup.vim