diff --git a/src/osmo_gsm_tester/log.py b/src/osmo_gsm_tester/log.py
index 3af7bbe..c4a9861 100644
--- a/src/osmo_gsm_tester/log.py
+++ b/src/osmo_gsm_tester/log.py
@@ -332,8 +332,9 @@
 
     def __enter__(self):
         if not self.set_child_of(Origin._global_current_origin):
-            return
+            return self
         Origin._global_current_origin = self
+        return self
 
     def __exit__(self, *exc_info):
         rc = None