diff --git a/flask_discord/_http.py b/flask_discord/_http.py
index ea00210..7a75c4b 100644
--- a/flask_discord/_http.py
+++ b/flask_discord/_http.py
@@ -66,7 +66,7 @@ class DiscordOAuth2HttpClient(abc.ABC):
         return OAuth2Session(
             client_id=self.client_id,
             token=token or session.get("DISCORD_OAUTH2_TOKEN"),
-            state=state,
+            state=state or session.get("DISCORD_OAUTH2_STATE"),
             scope=scope,
             redirect_uri=self.redirect_uri,
             auto_refresh_kwargs={