diff --git a/app/activitypub/routes.py b/app/activitypub/routes.py
index a789945a..d3254f5f 100644
--- a/app/activitypub/routes.py
+++ b/app/activitypub/routes.py
@@ -172,15 +172,15 @@ def lemmy_federated_instances():
 def user_profile(actor):
     """ Requests to this endpoint can be for a JSON representation of the user, or a HTML rendering of their profile.
     The two types of requests are differentiated by the header """
-    actor = actor.strip().lower()
+    actor = actor.strip()
     if current_user.is_authenticated and current_user.is_admin():
         if '@' in actor:
-            user: User = User.query.filter_by(ap_id=actor).first()
+            user: User = User.query.filter_by(ap_id=actor.lower()).first()
         else:
             user: User = User.query.filter_by(user_name=actor, ap_id=None).first()
     else:
         if '@' in actor:
-            user: User = User.query.filter_by(ap_id=actor, deleted=False, banned=False).first()
+            user: User = User.query.filter_by(ap_id=actor.lower(), deleted=False, banned=False).first()
         else:
             user: User = User.query.filter_by(user_name=actor, deleted=False, ap_id=None).first()