diff --git a/board/utils.py b/board/utils.py
index 4a1fe79..268be2b 100644
--- a/board/utils.py
+++ b/board/utils.py
@@ -37,8 +37,8 @@ def is_banned(ip: str, board: Optional["Board"]) -> bool:
     now = timezone.now()
     bans = [ban for ban in get_ip_bans(ip) if ban.board == board or not ban.board]
     if bans:
-        active = [ban for ban in bans if ban.expires > now]
-        expired = [ban for ban in bans if ban.expires <= now]
+        active = [ban for ban in bans if not ban.expires or ban.expires > now]
+        expired = [ban for ban in bans if ban.expires and ban.expires <= now]
         # Delete expired bans
         for ban in expired:
             ban.delete()
diff --git a/board/views.py b/board/views.py
index 5b203b3..e1a1498 100644
--- a/board/views.py
+++ b/board/views.py
@@ -35,7 +35,7 @@ class BannedView(TemplateView):
         bans = get_ip_bans(ip)
 
         now = timezone.now()
-        active_bans = [ban for ban in bans if ban.expires > now]
+        active_bans = [ban for ban in bans if not ban.expires or ban.expires > now]
         context["bans"] = bans
         context["active_bans"] = active_bans
         context["ip"] = ip
@@ -215,10 +215,10 @@ class BanCreateView(PermissionRequiredMixin, edit.CreateView):
             if ban.board == self.board or ban.board is None
         ]
         context["previous_bans"] = [
-            ban for ban in bans if ban.expires is not None and ban.expires < now
+            ban for ban in bans if ban.expires and ban.expires < now
         ]
         context["current_bans"] = [
-            ban for ban in bans if ban.expires is None or ban.expires > now
+            ban for ban in bans if not ban.expires or ban.expires > now
         ]
         context["templates"] = BanTemplate.objects.filter(
             Q(board=self.board) | Q(board=None)