diff --git a/lib/public/files.php b/lib/public/files.php
index 4975bbb7dfa03456b252ece8d0c89017113f6452..852b041eefb1bc1af72cce4640bff5d41c6f44e7 100644
--- a/lib/public/files.php
+++ b/lib/public/files.php
@@ -61,7 +61,7 @@ class Files {
 	 * @param string $query
 	 * @return array
 	 */
-	public function searchByMime($mimetype) {
+	static public function searchByMime($mimetype) {
 		return(\OC\Files\Filesystem::searchByMime( $mimetype ));
 	}