diff --git a/lib/base.php b/lib/base.php
index 5f8a7ed0f1..1e353df86d 100644
--- a/lib/base.php
+++ b/lib/base.php
@@ -1116,14 +1116,6 @@ class OC {
 		return true;
 	}
 
-	/**
-	 * Get the temporary dir to store uploaded data
-	 * @return null|string Path to the temporary directory or null
-	 */
-	function get_temp_dir() {
-		return \OC::$server->getTempManager()->t_get_temp_dir();
-	}
-
 }
 
 
diff --git a/lib/private/preview/office.php b/lib/private/preview/office.php
index 30398147aa..ac6b4afa0c 100644
--- a/lib/private/preview/office.php
+++ b/lib/private/preview/office.php
@@ -36,7 +36,7 @@ abstract class Office extends Provider {
 
 		$absPath = $fileview->toTmpFile($path);
 
-		$tmpDir = get_temp_dir();
+		$tmpDir = \OC::$server->getTempManager()->getTempBaseDir();
 
 		$defaultParameters = ' -env:UserInstallation=file://' . escapeshellarg($tmpDir . '/owncloud-' . \OC_Util::getInstanceId() . '/') . ' --headless --nologo --nofirststartwizard --invisible --norestore --convert-to pdf --outdir ';
 		$clParameters = \OCP\Config::getSystemValue('preview_office_cl_parameters', $defaultParameters);