diff --git a/safaribooks.py b/safaribooks.py
old mode 100644
new mode 100755
index e6fdf14..4146ef3
--- a/safaribooks.py
+++ b/safaribooks.py
@@ -854,6 +854,7 @@ class SafariBooks:
             response = self.requests_provider(urljoin(SAFARI_BASE_URL, url), stream=True)
             if response == 0:
                 self.display.error("Error trying to retrieve this image: %s\n    From: %s" % (image_name, url))
+                return
 
             with open(image_path, 'wb') as img:
                 for chunk in response.iter_content(1024):