diff --git a/apps/files/appinfo/app.php b/apps/files/appinfo/app.php
index dfff7f6f464d310047acbd6d4ba94123daa278e3..fb03b98281560b112ffa1c2894e4c84b86840865 100644
--- a/apps/files/appinfo/app.php
+++ b/apps/files/appinfo/app.php
@@ -34,7 +34,6 @@ $l = \OC::$server->getL10N('files');
\OC::$server->getSearch()->registerProvider(File::class, array('apps' => array('files')));
$templateManager = \OC_Helper::getFileTemplateManager();
-$templateManager->registerTemplate('text/html', 'core/templates/filetemplates/template.html');
$templateManager->registerTemplate('application/vnd.oasis.opendocument.presentation', 'core/templates/filetemplates/template.odp');
$templateManager->registerTemplate('application/vnd.oasis.opendocument.text', 'core/templates/filetemplates/template.odt');
$templateManager->registerTemplate('application/vnd.oasis.opendocument.spreadsheet', 'core/templates/filetemplates/template.ods');
diff --git a/core/templates/filetemplates/template.html b/core/templates/filetemplates/template.html
deleted file mode 100644
index f16e80cb7ef2b9764b2743850502ff2466acbaf7..0000000000000000000000000000000000000000
--- a/core/templates/filetemplates/template.html
+++ /dev/null
@@ -1,9 +0,0 @@
-<!DOCTYPE html>
-<html>
- <head>
-
- </head>
- <body>
-
- </body>
-</html>
diff --git a/lib/private/Files/Type/TemplateManager.php b/lib/private/Files/Type/TemplateManager.php
index 8b30eb6b4e815373502eaba162bede15cbf32d92..08c4593bf87acb8930a245552c32c19979bbc5eb 100644
--- a/lib/private/Files/Type/TemplateManager.php
+++ b/lib/private/Files/Type/TemplateManager.php
@@ -24,6 +24,9 @@
namespace OC\Files\Type;
+/**
+ * @deprecated 18.0.0
+ */
class TemplateManager {
protected $templates = array();
@@ -34,6 +37,7 @@ class TemplateManager {
/**
* get the path of the template for a mimetype
*
+ * @deprecated 18.0.0
* @param string $mimetype
* @return string|null
*/
@@ -48,6 +52,7 @@ class TemplateManager {
/**
* get the template content for a mimetype
*
+ * @deprecated 18.0.0
* @param string $mimetype
* @return string
*/
diff --git a/lib/private/legacy/helper.php b/lib/private/legacy/helper.php
index a5ed3a3e24b2e0a86457c757e0c4c0f1bfa65d39..6faba3ebee2942b12fad231f3e353ba061890070 100644
--- a/lib/private/legacy/helper.php
+++ b/lib/private/legacy/helper.php
@@ -189,6 +189,7 @@ class OC_Helper {
}
/**
+ * @deprecated 18.0.0
* @return \OC\Files\Type\TemplateManager
*/
static public function getFileTemplateManager() {