diff --git a/airbyte-cdk/python/CHANGELOG.md b/airbyte-cdk/python/CHANGELOG.md
index 63e18883e50d..bcc0560bac2a 100644
--- a/airbyte-cdk/python/CHANGELOG.md
+++ b/airbyte-cdk/python/CHANGELOG.md
@@ -1,7 +1,7 @@
 # Changelog
 
 ## 0.1.10
-Add checking specified config againt spec for read, write, check and ddiscover commands
+Add checking specified config againt spec for read, write, check and discover commands
 
 ##0.1.9
 remove this line after rebase
diff --git a/airbyte-cdk/python/airbyte_cdk/sources/utils/schema_helpers.py b/airbyte-cdk/python/airbyte_cdk/sources/utils/schema_helpers.py
index cdd26ddc47de..463cc4f3c38b 100644
--- a/airbyte-cdk/python/airbyte_cdk/sources/utils/schema_helpers.py
+++ b/airbyte-cdk/python/airbyte_cdk/sources/utils/schema_helpers.py
@@ -139,6 +139,6 @@ def check_config_against_spec(config: Mapping[str, Any], spec: ConnectorSpecific
     spec_schema = spec.connectionSpecification
     try:
         validate(instance=config, schema=spec_schema)
-        return None
+        return
     except ValidationError as validation_error:
         return "Config validation error: " + validation_error.message