diff --git a/Collectors/DetailedCollector.py b/Collectors/DetailedCollector.py
index 78ef2de..d2fa31e 100755
--- a/Collectors/DetailedCollector.py
+++ b/Collectors/DetailedCollector.py
@@ -135,7 +135,7 @@ def addRecord(self, sid, userID, fileClose, timestamp, addr, openTime):
         rec['readv'] = fileClose.readv
         rec['write'] = fileClose.write
 
-        if fileClose.ops:
+        if isinstance(fileClose, decoding.fileClose) and fileClose.ops:
             # read_average (optional)
             try:
                 rec['read_average'] = (fileClose.read + fileClose.readv) / (fileClose.ops.read + fileClose.ops.readv)