diff --git a/resources/views/themes/default1/installer/helpdesk/view2.blade.php b/resources/views/themes/default1/installer/helpdesk/view2.blade.php
index 4d4ec1f51..ea0a4b09f 100644
--- a/resources/views/themes/default1/installer/helpdesk/view2.blade.php
+++ b/resources/views/themes/default1/installer/helpdesk/view2.blade.php
@@ -178,7 +178,7 @@ function validate_zend_compatibility_mode(&$results) {
 function validate_extensions(&$results) {
     $ok = true;
 
-    $required_extensions = array('mcrypt', 'openssl', 'pdo', 'fileinfo', 'curl', 'zip', 'mbstring');
+    $required_extensions = array('mcrypt', 'openssl', 'pdo', 'fileinfo', 'curl', 'zip', 'mbstring', 'imap');
 
     foreach ($required_extensions as $required_extension) {
         if (extension_loaded($required_extension)) {