diff --git a/docs/prerequisite-system.md b/docs/prerequisite-system.md
index f378b7487..82c746cbb 100644
--- a/docs/prerequisite-system.md
+++ b/docs/prerequisite-system.md
@@ -12,7 +12,7 @@ Before you run **mailcow: dockerized**, there are a few requirements that you sh
 
 ## Minimum System Resources
 
-**Do not** use OpenVZ or LXC as guests for mailcow.
+**OpenVZ or LXC are not supported**.
 
 Please make sure that your system has at least the following resources: