diff --git a/airbyte_cdk/sources/declarative/manifest_declarative_source.py b/airbyte_cdk/sources/declarative/manifest_declarative_source.py
index b2f02c7e..83c5fa5f 100644
--- a/airbyte_cdk/sources/declarative/manifest_declarative_source.py
+++ b/airbyte_cdk/sources/declarative/manifest_declarative_source.py
@@ -360,7 +360,7 @@ def _dynamic_stream_configs(
                     error_message = f"Dynamic streams list contains a duplicate name: {name}. Please contact Airbyte Support."
                     failure_type = FailureType.system_error
 
-                    if resolver_type == "ConfigComponentsResolverModel":
+                    if resolver_type == "ConfigComponentsResolver":
                         error_message = f"Dynamic streams list contains a duplicate name: {name}. Please check your configuration."
                         failure_type = FailureType.config_error