diff --git a/src/PhpImap/IncomingMailAttachment.php b/src/PhpImap/IncomingMailAttachment.php
index 7b6d399d..2678c562 100644
--- a/src/PhpImap/IncomingMailAttachment.php
+++ b/src/PhpImap/IncomingMailAttachment.php
@@ -115,7 +115,7 @@ public function saveToDisk() : bool
 			return false;
 		}
 
-		if (false === file_put_contents($this->filePath, $this->dataInfo->fetch())) {
+		if (false === file_put_contents($this->__get('filePath'), $this->dataInfo->fetch())) {
 			unset($this->filePath, $this->file_path);
 
 			return false;