diff --git a/PostgreSQL/OMOP CDM ddl - PostgreSQL.sql b/PostgreSQL/OMOP CDM ddl - PostgreSQL.sql
index 3d4e292..12592c2 100644
--- a/PostgreSQL/OMOP CDM ddl - PostgreSQL.sql	
+++ b/PostgreSQL/OMOP CDM ddl - PostgreSQL.sql	
@@ -229,7 +229,7 @@ CREATE TABLE person
      year_of_birth					INTEGER		NOT NULL , 
      month_of_birth					INTEGER		NULL, 
      day_of_birth					INTEGER		NULL, 
-	 datetime_of_birth					TIMESTAMP 	NULL,
+	   birth_datetime					TIMESTAMP 	NULL,
      race_concept_id				INTEGER		NOT NULL, 
      ethnicity_concept_id			INTEGER		NOT NULL, 
      location_id					INTEGER		NULL,