diff --git a/docs/platform/howto/manage-vpc-peering.md b/docs/platform/howto/manage-vpc-peering.md
index c4cdb95a..d7b59ff9 100644
--- a/docs/platform/howto/manage-vpc-peering.md
+++ b/docs/platform/howto/manage-vpc-peering.md
@@ -41,6 +41,10 @@ To set up VPC peering for your Aiven project:
        the range for your Aiven project's VPC to
        `191.161.1.0/24`.
 
+       :::note
+       Network prefix length must be between 20 and 24 inclusive.
+       :::
+
 1.  Click **Create VPC**.
 
 The state of the VPC is shown in the table.