diff --git a/bob/models.py b/bob/models.py
index 59bb5e7..58a2ccc 100644
--- a/bob/models.py
+++ b/bob/models.py
@@ -33,7 +33,7 @@ s3 = boto.connect_s3()
 bucket = s3.get_bucket(S3_BUCKET)
 upstream = None
 if UPSTREAM_S3_BUCKET:
-    upstream = s3.get_bucket(S3_BUCKET)
+    upstream = s3.get_bucket(UPSTREAM_S3_BUCKET)
 
 # Make stdin/out as unbuffered as possible via file descriptor modes.
 sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', 0)