diff --git a/userspace/falco/config_json_schema.h b/userspace/falco/config_json_schema.h
index ba6419e7..ba9546c8 100644
--- a/userspace/falco/config_json_schema.h
+++ b/userspace/falco/config_json_schema.h
@@ -593,6 +593,9 @@ const char config_schema_string[] = LONG_STRING_CONST(
                         },
                         {
                             "type": "string"
+                        },
+                        {
+                            "type": "null"
                         }
                     ]
                 },