diff --git a/tests/helpers/test_config_entry_oauth2_flow.py b/tests/helpers/test_config_entry_oauth2_flow.py
index 0f4812082ee..d237c24f6f3 100644
--- a/tests/helpers/test_config_entry_oauth2_flow.py
+++ b/tests/helpers/test_config_entry_oauth2_flow.py
@@ -709,6 +709,7 @@ async def test_oauth_session(
             },
         },
     )
+    config_entry.add_to_hass(hass)
 
     now = time.time()
     session = config_entry_oauth2_flow.OAuth2Session(hass, config_entry, local_impl)
@@ -755,6 +756,7 @@ async def test_oauth_session_with_clock_slightly_out_of_sync(
             },
         },
     )
+    config_entry.add_to_hass(hass)
 
     now = time.time()
     session = config_entry_oauth2_flow.OAuth2Session(hass, config_entry, local_impl)