diff --git a/Script/DeleteThread.py b/Script/DeleteThread.py
index 3a1cfb0038826d9217fa06df7492036f0188cd10..92153a2ee1f350dc8a5d994cdfbd14135e26fa63 100755
--- a/Script/DeleteThread.py
+++ b/Script/DeleteThread.py
@@ -242,7 +242,7 @@ class DeleteThread(threading.Thread):
                         self.dbLock.release()
 
                     
-                        if not filehealth == 'TRUNCATED':
+                        if filehealth and not filehealth == 'TRUNCATED':
                             success &= (castorfilesize == dbfilesize)
                             success &= (dbchecksum.lower() == checksum.lower())