diff --git a/Doc/installing.rst b/Doc/installing.rst
index e4518c11..26ab7c68 100644
--- a/Doc/installing.rst
+++ b/Doc/installing.rst
@@ -113,8 +113,8 @@ on the local system when building python-ldap:
 
 - `Python`_ including its development files
 - C compiler corresponding to your Python version (on Linux, it is usually ``gcc``)
-- `OpenLDAP`_ client libs version 2.4.11 or later;
-  it is not possible and not supported to build with prior versions.
+- `OpenLDAP`_ client libs version 2.4.11 or later, but before 2.5.0;
+  it is not possible and not supported to build with prior to 2.4.11 versions or 2.5.0 or later versions.
 - `OpenSSL`_ (optional)
 - `Cyrus SASL`_ (optional)
 - Kerberos libraries, MIT or Heimdal (optional)