1 files changed, 1 insertions, 1 deletions
diff --git a/INSTALL b/INSTALL
index f6d305ae5..30217686b 100644
--- a/INSTALL
+++ b/INSTALL
@@ -13,7 +13,7 @@ REQUIREMENTS
 * .htaccess support allowing overrides for DirectoryIndex
 * PHP Version 5.2.1 or greater including
    - PDO, PCRE, DOM, JSON, XML, Session, Sockets (required)
-   - libiconv (recommended)
+   - libiconv, zip (recommended)
    - mbstring, fileinfo, mcrypt (optional)
 * PEAR packages distributed with Roundcube or external:
    - Mail_Mime 1.8.1 or newer