diff --git a/src/_pytest/deprecated.py b/src/_pytest/deprecated.py
index 72b023bdb91..2bd97657d5b 100644
--- a/src/_pytest/deprecated.py
+++ b/src/_pytest/deprecated.py
@@ -9,6 +9,7 @@
 in case of warnings which need to format their messages.
 """
 from _pytest.warning_types import PytestDeprecationWarning
+from _pytest.warning_types import UnformattedWarning
 
 # set of plugins which have been integrated into the core; we use this list to ignore
 # them during registration to avoid conflicts