diff --git a/StandardizedClinicalDataTables/OBSERVATION.md b/StandardizedClinicalDataTables/OBSERVATION.md
index 7eddbee..855bcb2 100644
--- a/StandardizedClinicalDataTables/OBSERVATION.md
+++ b/StandardizedClinicalDataTables/OBSERVATION.md
@@ -22,7 +22,7 @@ Field|Required|Type|Description
 |qualifier_source_value|No|varchar(50)|The source value associated with a qualifier to characterize the observation|
 |observation_event_id| No | integer| A foreign key to an event table (e.g., PROCEDURE_OCCURRENCE_ID). |
 |obs_event_field_concept_id| Yes | integer| A foreign key that refers to a Standard Concept identifier in the Standardized Vocabularies referring to the field represented in the OBSERVATION_EVENT_ID. |
-|value_as_datetime| No | integer| The observation result stored as a datetime value. This is applicable to observations where the result is expressed as a point in time.|
+|value_as_datetime| No | datetime| The observation result stored as a datetime value. This is applicable to observations where the result is expressed as a point in time.|
 
 ### Conventions