diff --git a/apps/files_external/lib/streamwrapper.php b/apps/files_external/lib/streamwrapper.php
index 23c5f91a2f3..aa42cbde828 100644
--- a/apps/files_external/lib/streamwrapper.php
+++ b/apps/files_external/lib/streamwrapper.php
@@ -68,6 +68,7 @@ abstract class StreamWrapper extends Common {
 			}
 		} else {
 			$this->file_put_contents($path, '');
+			return true;
 		}
 	}