diff --git a/modules/admin/admin.admin.model.php b/modules/admin/admin.admin.model.php
index f1513f25a..021e6fc6a 100644
--- a/modules/admin/admin.admin.model.php
+++ b/modules/admin/admin.admin.model.php
@@ -123,7 +123,7 @@ class adminAdminModel extends admin
 
 		if($ftp_info->sftp == 'Y')
 		{
-			if(!function_exists(ssh2_sftp))
+			if(!function_exists('ssh2_sftp'))
 			{
 				return new Object(-1, 'disable_sftp_support');
 			}
@@ -261,7 +261,7 @@ class adminAdminModel extends admin
 
 		if($ftp_info->sftp == 'Y')
 		{
-			if(!function_exists(ssh2_sftp))
+			if(!function_exists('ssh2_sftp'))
 			{
 				return new Object(-1, 'disable_sftp_support');
 			}