diff --git a/netbox/ipam/models.py b/netbox/ipam/models.py
index a04e4b9ce..51807d0fa 100644
--- a/netbox/ipam/models.py
+++ b/netbox/ipam/models.py
@@ -267,7 +267,7 @@ class PrefixQuerySet(NullsFirstQuerySet):
             p.depth = len(stack) - 1
         if limit is None:
             return queryset
-        return filter(lambda p: p.depth <= limit, queryset)
+        return list(filter(lambda p: p.depth <= limit, queryset))
 
 
 @python_2_unicode_compatible
diff --git a/netbox/ipam/views.py b/netbox/ipam/views.py
index 6d2025944..bcbb80e8b 100644
--- a/netbox/ipam/views.py
+++ b/netbox/ipam/views.py
@@ -420,13 +420,7 @@ def prefix(request, pk):
     duplicate_prefix_table.exclude = ('vrf',)
 
     # Child prefixes table
-    if prefix.vrf:
-        # If the prefix is in a VRF, show child prefixes only within that VRF.
-        child_prefixes = Prefix.objects.filter(vrf=prefix.vrf)
-    else:
-        # If the prefix is in the global table, show child prefixes from all VRFs.
-        child_prefixes = Prefix.objects.all()
-    child_prefixes = child_prefixes.filter(prefix__net_contained=str(prefix.prefix))\
+    child_prefixes = Prefix.objects.filter(vrf=prefix.vrf, prefix__net_contained=str(prefix.prefix))\
         .select_related('site', 'role').annotate_depth(limit=0)
     if child_prefixes:
         child_prefixes = add_available_prefixes(prefix.prefix, child_prefixes)