diff --git a/test/unit/test_commands.py b/test/unit/test_commands.py
index bd99fbf..342f1d0 100644
--- a/test/unit/test_commands.py
+++ b/test/unit/test_commands.py
@@ -92,7 +92,8 @@ def _test_deploy(self, expected_message=None,
             rev = git_utils.get_latest_commit('master', short=True)
             expected_message = (
                 r'^Deployed {} to {}( in .*)? with MkDocs \S+ and mike \S+$'
-                .format(rev, expected_versions[0].version)
+                .format(re.escape(rev),
+                        re.escape(str(expected_versions[0].version)))
             )
 
         if os.path.exists(self.cfg['site_dir']):