diff --git a/doc/PRE_UPGRADE.md b/doc/PRE_UPGRADE.md
index a9717e7..fdb0dbf 100644
--- a/doc/PRE_UPGRADE.md
+++ b/doc/PRE_UPGRADE.md
@@ -1,3 +1,3 @@
-If you were using a MySQL DB, the new version only supports postgres and you should migrate it manually before upgrading.
+If you were using a MySQL DB, the new version only supports PostgreSQL and you should migrate it manually before upgrading.
 
-NB: DO NOT confirm the upgrade without making sure first that you are using a postgresql database.
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+NB: DO NOT confirm the upgrade without making sure first that you are using a PostgreSQL database.
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