diff --git a/lightrag/kg/postgres_impl.py b/lightrag/kg/postgres_impl.py
index 128e96be..98a09f9d 100644
--- a/lightrag/kg/postgres_impl.py
+++ b/lightrag/kg/postgres_impl.py
@@ -181,7 +181,7 @@ class PostgreSQLDB:
             )
 
     async def _migrate_timestamp_columns(self):
-        """Migrate timestamp columns in tables to timezone-aware types, assuming original data is in UTC time"""
+        """Migrate timestamp columns in tables to witimezone-free types, assuming original data is in UTC time"""
         # Tables and columns that need migration
         tables_to_migrate = {
             "LIGHTRAG_VDB_ENTITY": ["create_time", "update_time"],
@@ -211,7 +211,7 @@ class PostgreSQLDB:
                     data_type = column_info.get("data_type")
                     if data_type == "timestamp without time zone":
                         logger.debug(
-                            f"Column {table_name}.{column_name} is already timezone-aware, no migration needed"
+                            f"Column {table_name}.{column_name} is already witimezone-free, no migration needed"
                         )
                         continue
 
@@ -227,7 +227,7 @@ class PostgreSQLDB:
 
                     await self.execute(migration_sql)
                     logger.info(
-                        f"Successfully migrated {table_name}.{column_name} to timezone-aware type"
+                        f"Successfully migrated {table_name}.{column_name} to timezone-free type"
                     )
                 except Exception as e:
                     # Log error but don't interrupt the process