diff --git a/stac_fastapi/extensions/stac_fastapi/extensions/core/collection_search/collection_search.py b/stac_fastapi/extensions/stac_fastapi/extensions/core/collection_search/collection_search.py
index d06812fa..f7f452c9 100644
--- a/stac_fastapi/extensions/stac_fastapi/extensions/core/collection_search/collection_search.py
+++ b/stac_fastapi/extensions/stac_fastapi/extensions/core/collection_search/collection_search.py
@@ -95,7 +95,7 @@ def from_extensions(
             conf = supported_extensions.get(ext.__class__.__name__, None)
             if not conf:
                 warnings.warn(
-                    f"{ext.__class__.__name__} extension not supported in `CollectionSearchExtension.from_extensions` method.",  # noqa: E501
+                    f"Conformance class for `{ext.__class__.__name__}` extension not found.",
                     UserWarning,
                 )
             else:
@@ -203,7 +203,7 @@ def from_extensions(
             conf = supported_extensions.get(ext.__class__.__name__, None)
             if not conf:
                 warnings.warn(
-                    f"{ext.__class__.__name__} extension not supported in `CollectionSearchExtension.from_extensions` method.",  # noqa: E501
+                    f"Conformance class for `{ext.__class__.__name__}` extension not found.",
                     UserWarning,
                 )
             else: