diff --git a/StandardizedDerivedElements/DOSE_ERA.md b/StandardizedDerivedElements/DOSE_ERA.md
index d42af2e..d9960f0 100644
--- a/StandardizedDerivedElements/DOSE_ERA.md
+++ b/StandardizedDerivedElements/DOSE_ERA.md
@@ -7,8 +7,8 @@ Field|Required|Type|Description
 |drug_concept_id|Yes|integer|A foreign key that refers to a Standard Concept identifier in the Standardized Vocabularies for the active Ingredient Concept.|
 |unit_concept_id|Yes|integer|A foreign key that refers to a Standard Concept identifier in the Standardized Vocabularies for the unit concept.|
 |dose_value|Yes|float|The numeric value of the dose.|
-|dose_era_start_date|Yes|date|The start date for the drug era constructed from the individual instances of drug exposures. It is the start date of the very first chronologically recorded instance of utilization of a drug.|
-|dose_era_end_date|Yes|date|The end date for the drug era constructed from the individual instance of drug exposures. It is the end date of the final continuously recorded instance of utilization of a drug.|
+|dose_era_start_date|Yes|date|The start date for the dose era constructed from the individual instances of drug exposures. It is the start date of the very first chronologically recorded instance of utilization of a drug.|
+|dose_era_end_date|Yes|date|The end date for the dose era constructed from the individual instance of drug exposures. It is the end date of the final continuously recorded instance of utilization of a drug.|
 
 ### Conventions 
   * Dose Eras will be derived from records in the DRUG_EXPOSURE table and the Dose information from the DRUG_STRENGTH table using a standardized algorithm.