diff --git a/subscription/upgrade.md b/subscription/upgrade.md
index b2b07fece8..6e2546b047 100644
--- a/subscription/upgrade.md
+++ b/subscription/upgrade.md
@@ -101,7 +101,7 @@ You can view the confirmation of the upgrade with an invoice containing details
 
 ## Update billing information
 
-You must be on owner of the organization to make changes to the billing information.
+You must be an owner of the organization to make changes to the billing information.
 
 To update the billing information for your organization or personal account: