diff --git a/cuckoo/data/analyzer/darwin/analyzer.py b/cuckoo/data/analyzer/darwin/analyzer.py
index 80fc6c1562..ef5ac20b7e 100644
--- a/cuckoo/data/analyzer/darwin/analyzer.py
+++ b/cuckoo/data/analyzer/darwin/analyzer.py
@@ -142,7 +142,7 @@ def _upload_file(self, filepath):
         # Check whether we've already dumped this file - in that case skip it
         try:
             hashsum = hash_file(hashlib.sha256, filepath)
-            if sha256 in self.uploaded_hashes:
+            if hashsum in self.uploaded_hashes:
                 return
         except IOError as e:
             self.log.info("Error dumping file from path \"%s\": %s", filepath, e)