diff --git a/apps/files/lib/Helper.php b/apps/files/lib/Helper.php
index be8f2229495a9..c79b60ecaf204 100644
--- a/apps/files/lib/Helper.php
+++ b/apps/files/lib/Helper.php
@@ -8,60 +8,12 @@
 
 namespace OCA\Files;
 
-use OC\Files\Filesystem;
 use OCP\Files\FileInfo;
-use OCP\Util;
 
 /**
  * Helper class for manipulating file information
  */
 class Helper {
-	/**
-	 * Comparator function to sort files alphabetically and have
-	 * the directories appear first
-	 *
-	 * @param FileInfo $a file
-	 * @param FileInfo $b file
-	 * @return int -1 if $a must come before $b, 1 otherwise
-	 */
-	public static function compareFileNames(FileInfo $a, FileInfo $b) {
-		$aType = $a->getType();
-		$bType = $b->getType();
-		if ($aType === 'dir' && $bType !== 'dir') {
-			return -1;
-		} elseif ($aType !== 'dir' && $bType === 'dir') {
-			return 1;
-		} else {
-			return Util::naturalSortCompare($a->getName(), $b->getName());
-		}
-	}
-
-	/**
-	 * Comparator function to sort files by date
-	 *
-	 * @param FileInfo $a file
-	 * @param FileInfo $b file
-	 * @return int -1 if $a must come before $b, 1 otherwise
-	 */
-	public static function compareTimestamp(FileInfo $a, FileInfo $b) {
-		$aTime = $a->getMTime();
-		$bTime = $b->getMTime();
-		return ($aTime < $bTime) ? -1 : 1;
-	}
-
-	/**
-	 * Comparator function to sort files by size
-	 *
-	 * @param FileInfo $a file
-	 * @param FileInfo $b file
-	 * @return int -1 if $a must come before $b, 1 otherwise
-	 */
-	public static function compareSize(FileInfo $a, FileInfo $b) {
-		$aSize = $a->getSize();
-		$bSize = $b->getSize();
-		return ($aSize < $bSize) ? -1 : 1;
-	}
-
 	/**
 	 * Formats the file info to be returned as JSON to the client.
 	 *
@@ -107,42 +59,4 @@ public static function formatFileInfo(FileInfo $i) {
 		}
 		return $entry;
 	}
-
-	/**
-	 * Retrieves the contents of the given directory and
-	 * returns it as a sorted array of FileInfo.
-	 *
-	 * @param string $dir path to the directory
-	 * @param string $sortAttribute attribute to sort on
-	 * @param bool $sortDescending true for descending sort, false otherwise
-	 * @param string $mimetypeFilter limit returned content to this mimetype or mimepart
-	 * @return FileInfo[] files
-	 */
-	public static function getFiles($dir, $sortAttribute = 'name', $sortDescending = false, $mimetypeFilter = '') {
-		$content = Filesystem::getDirectoryContent($dir, $mimetypeFilter);
-
-		return self::sortFiles($content, $sortAttribute, $sortDescending);
-	}
-
-	/**
-	 * Sort the given file info array
-	 *
-	 * @param FileInfo[] $files files to sort
-	 * @param string $sortAttribute attribute to sort on
-	 * @param bool $sortDescending true for descending sort, false otherwise
-	 * @return FileInfo[] sorted files
-	 */
-	public static function sortFiles($files, $sortAttribute = 'name', $sortDescending = false) {
-		$sortFunc = 'compareFileNames';
-		if ($sortAttribute === 'mtime') {
-			$sortFunc = 'compareTimestamp';
-		} elseif ($sortAttribute === 'size') {
-			$sortFunc = 'compareSize';
-		}
-		usort($files, [Helper::class, $sortFunc]);
-		if ($sortDescending) {
-			$files = array_reverse($files);
-		}
-		return $files;
-	}
 }
diff --git a/apps/files_trashbin/lib/Helper.php b/apps/files_trashbin/lib/Helper.php
index cdfa847633b14..9fa9315cdd605 100644
--- a/apps/files_trashbin/lib/Helper.php
+++ b/apps/files_trashbin/lib/Helper.php
@@ -12,11 +12,52 @@
 use OC\Files\View;
 use OCP\Constants;
 use OCP\Files\Cache\ICacheEntry;
+use OCP\Files\FileInfo as IFileInfo;
 use OCP\Files\IMimeTypeDetector;
 use OCP\Files\Mount\IMountPoint;
 use OCP\Server;
+use OCP\Util;
 
 class Helper {
+	/**
+	 * Sort the given file info array.
+	 *
+	 * @param list<IFileInfo> $files
+	 * @return list<IFileInfo>
+	 */
+	public static function sortFiles(array $files, string $sortAttribute = 'name', bool $sortDescending = false): array {
+		$sortFunc = 'compareFileNames';
+		if ($sortAttribute === 'mtime') {
+			$sortFunc = 'compareTimestamp';
+		} elseif ($sortAttribute === 'size') {
+			$sortFunc = 'compareSize';
+		}
+		usort($files, [self::class, $sortFunc]);
+		if ($sortDescending) {
+			$files = array_reverse($files);
+		}
+		return $files;
+	}
+
+	private static function compareFileNames(IFileInfo $a, IFileInfo $b): int {
+		$aType = $a->getType();
+		$bType = $b->getType();
+		if ($aType === 'dir' && $bType !== 'dir') {
+			return -1;
+		} elseif ($aType !== 'dir' && $bType === 'dir') {
+			return 1;
+		}
+		return Util::naturalSortCompare($a->getName(), $b->getName());
+	}
+
+	private static function compareTimestamp(IFileInfo $a, IFileInfo $b): int {
+		return ($a->getMTime() < $b->getMTime()) ? -1 : 1;
+	}
+
+	private static function compareSize(IFileInfo $a, IFileInfo $b): int {
+		return ($a->getSize() < $b->getSize()) ? -1 : 1;
+	}
+
 	/**
 	 * Retrieves the contents of a trash bin directory.
 	 *
@@ -48,7 +89,7 @@ public static function getTrashFiles($dir, $user, $sortAttribute = '', $sortDesc
 		}
 
 		if ($sortAttribute !== '') {
-			return \OCA\Files\Helper::sortFiles($result, $sortAttribute, $sortDescending);
+			return self::sortFiles($result, $sortAttribute, $sortDescending);
 		}
 		return $result;
 	}
diff --git a/apps/files/tests/HelperTest.php b/apps/files_trashbin/tests/HelperTest.php
similarity index 97%
rename from apps/files/tests/HelperTest.php
rename to apps/files_trashbin/tests/HelperTest.php
index 776e72a729b07..9e0f52c769015 100644
--- a/apps/files/tests/HelperTest.php
+++ b/apps/files_trashbin/tests/HelperTest.php
@@ -7,8 +7,10 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
+namespace OCA\Files_Trashbin\Tests;
+
 use OC\Files\FileInfo;
-use OCA\Files\Helper;
+use OCA\Files_Trashbin\Helper;
 
 class HelperTest extends \Test\TestCase {
 	private static function makeFileInfo($name, $size, $mtime, $isDir = false): FileInfo {