diff --git a/StandardizedVocabularies/CONCEPT.md b/StandardizedVocabularies/CONCEPT.md
index 8c62f19..578be94 100644
--- a/StandardizedVocabularies/CONCEPT.md
+++ b/StandardizedVocabularies/CONCEPT.md
@@ -21,7 +21,7 @@ Field|Required|Type|Description
 Concepts in the Common Data Model are derived from a number of public or proprietary terminologies such as SNOMED-CT and RxNorm, or custom generated to standardize aspects of observational data. Both types of Concepts are integrated based on the following rules:
 
 No.|Convention Description
-:--------|:------------------------------------
+:--------|:---------------------------------------------------------------------
 | 1  | All Concepts are maintained centrally by the CDM and Vocabularies Working Group. Additional concepts can be added, as needed, upon request. |
 | 2  | For all Concepts, whether they are custom generated or adopted from published terminologies, a unique numeric identifier concept_id is assigned and used as the key to link all observational data to the corresponding Concept reference data. |
 | 3  | The concept_id of a Concept is persistent, i.e. stays the same for the same Concept between releases of the Standardized Vocabularies. |