diff --git a/aircox/templatetags/aircox.py b/aircox/templatetags/aircox.py
index 60af794..8d15d6d 100644
--- a/aircox/templatetags/aircox.py
+++ b/aircox/templatetags/aircox.py
@@ -59,6 +59,8 @@ def do_get_tracks(obj):
 @register.simple_tag(name="has_perm", takes_context=True)
 def do_has_perm(context, obj, perm, user=None, simple=False):
     """Return True if ``user.has_perm('[APP].[perm]_[MODEL]')``"""
+    if not obj:
+        return
     if user is None:
         user = context["request"].user
     if simple: