diff --git a/flask_discord/client.py b/flask_discord/client.py
index 6e505d5..e4d6ff8 100644
--- a/flask_discord/client.py
+++ b/flask_discord/client.py
@@ -63,8 +63,7 @@ class DiscordOAuth2Session(_http.DiscordOAuth2HttpClient):
 
         """
 
-        user_id = session.get("DISCORD_USER_ID")
-        self.users_cache.pop(user_id, None)
+        self.users_cache.pop(self.user_id, None)
 
         for session_key in self.SESSION_KEYS:
             try:
diff --git a/flask_discord/models/connections.py b/flask_discord/models/connections.py
index f67d3ba..9182ce1 100644
--- a/flask_discord/models/connections.py
+++ b/flask_discord/models/connections.py
@@ -1,6 +1,7 @@
+from flask import current_app
+
 from .base import DiscordModelsBase
 from .integration import Integration
-from flask import current_app, session
 
 
 class UserConnection(DiscordModelsBase):
@@ -76,7 +77,7 @@ class UserConnection(DiscordModelsBase):
         connections = super().fetch_from_api()
 
         if cache:
-            user = current_app.discord.users_cache.get(session.get("DISCORD_USER_ID"))
+            user = current_app.discord.users_cache.get(current_app.discord.user_id)
             try:
                 user.connections = connections
             except AttributeError:
diff --git a/flask_discord/models/guild.py b/flask_discord/models/guild.py
index 5c4c38b..6069baf 100644
--- a/flask_discord/models/guild.py
+++ b/flask_discord/models/guild.py
@@ -1,6 +1,5 @@
-from flask import current_app, session
 from .base import DiscordModelsBase
-
+from flask import current_app
 from .. import configs
 
 
@@ -63,7 +62,7 @@ class Guild(DiscordModelsBase):
         guilds = super().fetch_from_api()
 
         if cache:
-            user = current_app.discord.users_cache.get(session.get("DISCORD_USER_ID"))
+            user = current_app.discord.users_cache.get(current_app.discord.user_id)
             try:
                 user.guilds = {guild.id: guild for guild in guilds}
             except AttributeError:
diff --git a/flask_discord/models/user.py b/flask_discord/models/user.py
index 5e015da..e310954 100644
--- a/flask_discord/models/user.py
+++ b/flask_discord/models/user.py
@@ -136,7 +136,7 @@ class User(DiscordModelsBase):
             If the current doesn't exists in internal cache.
 
         """
-        return current_app.discord.users_cache.get(session.get("DISCORD_USER_ID"))
+        return current_app.discord.users_cache.get(current_app.discord.user_id)
 
     def add_to_guild(self, guild_id) -> dict:
         """Method to add user to the guild, provided OAuth2 session has already been created with ``guilds.join`` scope.