diff --git a/Lib/test/test_imaplib.py b/Lib/test/test_imaplib.py
index 30b553746af11a..b5c78a5d49c524 100644
--- a/Lib/test/test_imaplib.py
+++ b/Lib/test/test_imaplib.py
@@ -936,6 +936,7 @@ def test_with_statement_logout(self):
 
     @threading_helper.reap_threads
     @cpython_only
+    @unittest.skipUnless(__debug__, "Won't work if __debug__ is False")
     def test_dump_ur(self):
         # See: http://bugs.python.org/issue26543
         untagged_resp_dict = {'READ-WRITE': [b'']}
diff --git a/Misc/NEWS.d/next/Tests/2022-05-25-23-07-15.gh-issue-92886.Aki63_.rst b/Misc/NEWS.d/next/Tests/2022-05-25-23-07-15.gh-issue-92886.Aki63_.rst
new file mode 100644
index 00000000000000..581f6bfea24b6e
--- /dev/null
+++ b/Misc/NEWS.d/next/Tests/2022-05-25-23-07-15.gh-issue-92886.Aki63_.rst
@@ -0,0 +1 @@
+Fixing tests that fail when running with optimizations (``-O``) in ``test_imaplib.py``.