diff --git a/certs/PowerBICustomVisualTest_private.key b/certs/PowerBICustomVisualTest_private.key
index f34059f..dceb0ad 100644
--- a/certs/PowerBICustomVisualTest_private.key
+++ b/certs/PowerBICustomVisualTest_private.key
@@ -26,3 +26,4 @@ UIYJ4+BYZ0blW2HpCkUAqh4H860MRlkcEHAwCSKHxU9QjifV7e7cfAvX2VKOPcFQ
 TtVrs4ltamA6cRms/SWJQlkboXVRcPjfZt9WRYuqLoDnrODqXX4DF1fouGcuAJ1+
 7N6eq1wXbSPFFsR5K19JV7di1A==
 -----END PRIVATE KEY-----
+This key is only used so that we can serve the dev visual over https, and is thus harmless. Revoking the key is not an option, as it is a direct copy from the pbi tools repo.