1 files changed, 1 insertions, 0 deletions
diff --git a/INSTALL b/INSTALL
index c099fc626..326ef889f 100644
--- a/INSTALL
+++ b/INSTALL
@@ -14,6 +14,7 @@ REQUIREMENTS
 * PHP Version 5.2.1 or greater including
    - PCRE, DOM, JSON, XML, Session, Sockets (required)
    - PHP Data Objects (PDO) with driver for either MySQL, PostgreSQL or SQLite (required)
+     Note: MySQL database driver requires PHP 5.3 or newer.
    - Libiconv, Zip (recommended)
    - Fileinfo, Mcrypt, mbstring (optional)
 * PEAR packages distributed with Roundcube or external: