diff --git a/envoy.code.check/envoy/code/check/abstract/extensions.py b/envoy.code.check/envoy/code/check/abstract/extensions.py
index d186c0559..ebd827ade 100644
--- a/envoy.code.check/envoy/code/check/abstract/extensions.py
+++ b/envoy.code.check/envoy/code/check/abstract/extensions.py
@@ -324,7 +324,7 @@ async def _check_metadata_categories(
                 "and category is set", )
         return tuple(
             (f"Unknown extension category for {extension}: {cat}. "
-             "Please add it to tools/extensions/extensions_check.py")
+             "Please add it to {EXTENSIONS_SCHEMA}")
             for cat
             in categories
             if cat not in self.extension_categories)
diff --git a/envoy.code.check/tests/test_abstract_extensions.py b/envoy.code.check/tests/test_abstract_extensions.py
index 0851e8fb6..b8fee7684 100644
--- a/envoy.code.check/tests/test_abstract_extensions.py
+++ b/envoy.code.check/tests/test_abstract_extensions.py
@@ -1066,7 +1066,7 @@ async def test_extensions__check_metadata_categories(
         if wrong_cats:
             expected = tuple(
                 f"Unknown extension category for EXTENSION: {cat}. "
-                "Please add it to tools/extensions/extensions_check.py"
+                "Please add it to tools/extensions/extensions_schema.yaml"
                 for cat
                 in wrong_cats)
         else: