diff --git a/swh/journal/writer/__init__.py b/swh/journal/writer/__init__.py
--- a/swh/journal/writer/__init__.py
+++ b/swh/journal/writer/__init__.py
@@ -14,7 +14,6 @@
         kwargs = kwargs['args']
 
     if cls == 'inmemory':  # FIXME: Remove inmemory in due time
-        import warnings
         warnings.warn("cls = 'inmemory' is deprecated, use 'memory' instead",
                       DeprecationWarning)
         cls = 'memory'