diff --git a/amp_conf/htdocs/admin/libraries/extensions.class.php b/amp_conf/htdocs/admin/libraries/extensions.class.php
index 0ee2810082..ac3ab9d947 100644
--- a/amp_conf/htdocs/admin/libraries/extensions.class.php
+++ b/amp_conf/htdocs/admin/libraries/extensions.class.php
@@ -1318,11 +1318,13 @@ function output() {
 class ext_vmexists extends extension {
 	function output() {
 		global $version; // Asterisk Version
-		if (version_compare($version, "1.6", ">=")) {
-      return 'Set(VMBOXEXISTSSTATUS=${IF(${MAILBOX_EXISTS('.$this->data.')}?SUCCESS:FAILED)})';
-    } else {
-		  return "MailBoxExists(".$this->data.")";
-    }
+		if (version_compare($version, "11", ">=")) {
+			return 'Set(VMBOXEXISTSSTATUS=${IF(${VM_INFO('.$this->data.',exists)})}?SUCCESS:FAILED)})';
+		} elseif (version_compare($version, "1.6", ">=")) {
+			return 'Set(VMBOXEXISTSSTATUS=${IF(${MAILBOX_EXISTS('.$this->data.')}?SUCCESS:FAILED)})';
+		} else {
+			return "MailBoxExists(".$this->data.")";
+		}
 	}
 }
 class ext_saydigits extends extension {