diff --git a/kindle_download_helper/kindle.py b/kindle_download_helper/kindle.py
index b65e51a..14d7924 100644
--- a/kindle_download_helper/kindle.py
+++ b/kindle_download_helper/kindle.py
@@ -334,7 +334,11 @@ class Kindle:
             if not result.get("success", True):
                 logger.error("get all books error: %s", result.get("error"))
                 break
-            items = result["OwnershipData"]["items"]
+            try:
+                items = result["OwnershipData"]["items"]
+            except KeyError:
+                logger.error("get all books error: %s", result.get("error"))
+                break
             for item in items:
                 if filetype == "PDOC":
                     item["title"] = html.unescape(item["title"])