diff --git a/Lib/test/test_asyncio/test_futures.py b/Lib/test/test_asyncio/test_futures.py
index ee87261..96b41d6 100644
--- a/Lib/test/test_asyncio/test_futures.py
+++ b/Lib/test/test_asyncio/test_futures.py
@@ -322,9 +322,9 @@
                      r'source_traceback: Object created at \(most recent call last\):\n'
                      r'  File'
                      r'.*\n'
-                     r'  File "%s", line %s, in test_future_exception_never_retrieved\n'
+                     r'  File "{filename}", line {lineno}, in test_future_exception_never_retrieved\n'
                      r'    future = asyncio\.Future\(loop=self\.loop\)$'
-                     % (frame[0], frame[1]))
+                     ).format(filename=re.escape(frame[0]), lineno=frame[1])
             exc_info = (type(exc), exc, exc.__traceback__)
             m_log.error.assert_called_once_with(mock.ANY, exc_info=exc_info)
         else:
@@ -333,12 +333,12 @@
                      r'Future/Task created at \(most recent call last\):\n'
                      r'  File'
                      r'.*\n'
-                     r'  File "%s", line %s, in test_future_exception_never_retrieved\n'
+                     r'  File "{filename}", line {lineno}, in test_future_exception_never_retrieved\n'
                      r'    future = asyncio\.Future\(loop=self\.loop\)\n'
                      r'Traceback \(most recent call last\):\n'
                      r'.*\n'
                      r'MemoryError$'
-                     % (frame[0], frame[1]))
+                     ).format(filename=re.escape(frame[0]), lineno=frame[1])
             m_log.error.assert_called_once_with(mock.ANY, exc_info=False)
         message = m_log.error.call_args[0][0]
         self.assertRegex(message, re.compile(regex, re.DOTALL))
diff --git a/Lib/test/test_asyncio/test_tasks.py b/Lib/test/test_asyncio/test_tasks.py
index 54b29ba..dee14b2 100644
--- a/Lib/test/test_asyncio/test_tasks.py
+++ b/Lib/test/test_asyncio/test_tasks.py
@@ -1602,8 +1602,8 @@
                  r'  File "%s", line %s, in test_coroutine_never_yielded\n'
                  r'    coro = coro_noop\(\)$'
                  % (re.escape(coro_noop.__qualname__),
-                    func_filename, func_lineno,
-                    tb_filename, tb_lineno))
+                    re.escape(func_filename), func_lineno,
+                    re.escape(tb_filename), tb_lineno))
 
         self.assertRegex(message, re.compile(regex, re.DOTALL))