diff --git a/netbox/extras/filters.py b/netbox/extras/filters.py
index e44fb86e9..6bd5f3737 100644
--- a/netbox/extras/filters.py
+++ b/netbox/extras/filters.py
@@ -32,7 +32,7 @@ class CustomFieldFilter(django_filters.Filter):
             pass
         return queryset.filter(
             custom_field_values__field__name=self.name,
-            custom_field_values__serialized_value=value,
+            custom_field_values__serialized_value__icontains=value,
         )