diff --git a/admin_manual/installation/system_requirements.rst b/admin_manual/installation/system_requirements.rst
index 2a1407ea4..1e859fbd5 100644
--- a/admin_manual/installation/system_requirements.rst
+++ b/admin_manual/installation/system_requirements.rst
@@ -26,7 +26,8 @@ Supported Platforms
   Red Hat Enterprise Linux/Centos 6.5 and 7 (7 is 64-bit only), Ubuntu 12.04 
   LTS, 14.04 LTS, 14.10)
 * Web server: Apache 2 with mod_php
-* Databases: MySQL/MariaDB 5.5+; Oracle 11g (ownCloud Enterprise edition only); PostgreSQL
+* Databases: MySQL/MariaDB 5.5+; PostgreSQL; Oracle 11g (currently only possible 
+  if you `contact us <https://nextcloud.com/enterprise>` as part of a subscription)
 * PHP 5.4 + required
 * Hypervisors: Hyper-V, VMware ESX, Xen, KVM
 * Desktop: Windows XP SP3 (EoL Q2 2015), Windows 7+, Mac OS X 10.7+ (64-bit