diff --git a/plugins/Bigfile/BigfilePlugin.py b/plugins/Bigfile/BigfilePlugin.py
index 44ae608c..5b4520ff 100644
--- a/plugins/Bigfile/BigfilePlugin.py
+++ b/plugins/Bigfile/BigfilePlugin.py
@@ -387,7 +387,7 @@ class SiteStoragePlugin(object):
 
     def openBigfile(self, inner_path, prebuffer=0):
         file_info = self.site.content_manager.getFileInfo(inner_path)
-        if file_info and "piecemap" not in file_info:  # It's not a big file
+        if not file_info or (file_info and "piecemap" not in file_info):  # It's not a big file
             return False
 
         self.site.needFile(inner_path, blocking=False)  # Download piecemap