diff --git a/src/common/core/errors/plugin.json b/src/common/core/errors/plugin.json
index 06c670bd5..58e460776 100644
--- a/src/common/core/errors/plugin.json
+++ b/src/common/core/errors/plugin.json
@@ -20,7 +20,7 @@
       "help": "List of HTTP error code intercepted by BunkerWeb",
       "id": "intercepted-error-codes",
       "label": "Intercepted error codes",
-      "regex": "^( *([1-5]\\d{2})(?!.*\\2) *)+$",
+      "regex": "^( *([1-5]\\d{2})(?!.*\\2) *)*$",
       "type": "text"
     }
   }