diff --git a/runtime/indent/testdir/cleantest.vim b/runtime/indent/testdir/cleantest.vim
index 909cf81..69c0a1d 100644
--- a/runtime/indent/testdir/cleantest.vim
+++ b/runtime/indent/testdir/cleantest.vim
@@ -1,6 +1,11 @@
-" Deletes all the test output files: *.fail and *.out
-for fname in glob('testdir/*.out', 1, 1) + glob('testdir/*.fail', 1, 1)
-  call delete(fname)
-endfor
+" Only do this with the +eval feature
+if 1
+
+  " Deletes all the test output files: *.fail and *.out
+  for fname in glob('testdir/*.out', 1, 1) + glob('testdir/*.fail', 1, 1)
+    call delete(fname)
+  endfor
+
+endif
 
 quit