Index: utils/lit/tests/Inputs/shtest-format/lit.cfg
===================================================================
--- utils/lit/tests/Inputs/shtest-format/lit.cfg
+++ utils/lit/tests/Inputs/shtest-format/lit.cfg
@@ -6,4 +6,4 @@
 config.test_exec_root = None
 config.target_triple = 'x86_64-unknown-unknown'
 config.available_features.add('a-present-feature')
-config.substitutions.append(('%{python}', "'%s'" % (sys.executable)))
+config.substitutions.append(('%{python}', '"%s"' % (sys.executable)))