diff --git a/airbyte_cdk/sources/file_based/exceptions.py b/airbyte_cdk/sources/file_based/exceptions.py
index cd727463a..2687ccaa1 100644
--- a/airbyte_cdk/sources/file_based/exceptions.py
+++ b/airbyte_cdk/sources/file_based/exceptions.py
@@ -24,8 +24,8 @@ class FileBasedSourceError(Enum):
     )
     ERROR_VALIDATING_RECORD = "One or more records do not pass the schema validation policy. Please modify your input schema, or select a more lenient validation policy."
     ERROR_VALIDATION_STREAM_DISCOVERY_OPTIONS = "Only one of options 'Schemaless', 'Input Schema', 'Files To Read For Schema Discover' or 'Use First Found File For Schema Discover' can be provided at the same time."
-    ERROR_PARSING_RECORD_MISMATCHED_COLUMNS = "A header field has resolved to `None`. This indicates that the CSV has more rows than the number of header fields. If you input your schema or headers, please verify that the number of columns corresponds to the number of columns in your CSV's rows."
-    ERROR_PARSING_RECORD_MISMATCHED_ROWS = "A row's value has resolved to `None`. This indicates that the CSV has more columns in the header field than the number of columns in the row(s). If you input your schema or headers, please verify that the number of columns corresponds to the number of columns in your CSV's rows."
+    ERROR_PARSING_RECORD_MISMATCHED_COLUMNS = "CSV row has more columns than the header."
+    ERROR_PARSING_RECORD_MISMATCHED_ROWS = "CSV row has fewer columns than the header."
     STOP_SYNC_PER_SCHEMA_VALIDATION_POLICY = "Stopping sync in accordance with the configured validation policy. Records in file did not conform to the schema."
     NULL_VALUE_IN_SCHEMA = "Error during schema inference: no type was detected for key."
     UNRECOGNIZED_TYPE = "Error during schema inference: unrecognized type."