diff --git a/PostgreSQL/README.md b/PostgreSQL/README.md
index 9de11f6..da1519f 100644
--- a/PostgreSQL/README.md
+++ b/PostgreSQL/README.md
@@ -11,8 +11,8 @@ In order to create your instantiation of the Common Data Model, we recommend fol
 
 3. Load your data into the schema.
 
-4. Execute the script `OMOP CDM postgresql constraints.txt` to add the constraints (primary keys). 
+4. Execute the script `OMOP CDM postgresql indexes required.txt` to add the minimum set of indexes and primary keys we recommend.
 
-5. Execute the script `OMOP CDM postgresql indexes required.txt` to add the minimum set of indexes and foreign keys we recommend.
+5. Execute the script `OMOP CDM postgresql constraints.txt` to add the constraints (foreign keys). 
 
 Note: you could also apply the constraints and/or the indexes before loading the data, but this will slow down the insertion of the data considerably.