diff --git a/apps/files_external/lib/Lib/Storage/AmazonS3.php b/apps/files_external/lib/Lib/Storage/AmazonS3.php
index 29e4765f2aca7..67438502207f7 100644
--- a/apps/files_external/lib/Lib/Storage/AmazonS3.php
+++ b/apps/files_external/lib/Lib/Storage/AmazonS3.php
@@ -573,6 +573,10 @@ public function touch($path, $mtime = null) {
 		return true;
 	}
 
+	/**
+	 * @param string $source
+	 * @param string $target
+	 */
 	public function copy($source, $target, bool $preserveMtime = false, ?bool $isFile = null): bool {
 		$source = $this->normalizePath($source);
 		$target = $this->normalizePath($target);
diff --git a/apps/files_external/lib/Lib/Storage/SFTP.php b/apps/files_external/lib/Lib/Storage/SFTP.php
index d779a550d13e6..746c0fc7ccabe 100644
--- a/apps/files_external/lib/Lib/Storage/SFTP.php
+++ b/apps/files_external/lib/Lib/Storage/SFTP.php
@@ -519,6 +519,10 @@ public function writeStream(string $path, $stream, int $size = null): int {
 		}
 	}
 
+	/**
+	 * @param string $source
+	 * @param string $target
+	 */
 	public function copy($source, $target, bool $preserveMtime = false): bool {
 		if ($this->is_dir($source) || $this->is_dir($target)) {
 			return parent::copy($source, $target, $preserveMtime);
diff --git a/apps/files_external/lib/Lib/Storage/Swift.php b/apps/files_external/lib/Lib/Storage/Swift.php
index 6f2e9f1ee1cc8..e5da595ad7d99 100644
--- a/apps/files_external/lib/Lib/Storage/Swift.php
+++ b/apps/files_external/lib/Lib/Storage/Swift.php
@@ -483,6 +483,10 @@ public function touch($path, $mtime = null) {
 		}
 	}
 
+	/**
+	 * @param string $source
+	 * @param string $target
+	 */
 	public function copy($source, $target, bool $preserveMtime = false): bool {
 		$source = $this->normalizePath($source);
 		$target = $this->normalizePath($target);