diff --git a/zfs-backup.py b/zfs-backup.py
index 4d3d1ec..ed63f23 100755
--- a/zfs-backup.py
+++ b/zfs-backup.py
@@ -261,10 +261,10 @@ class ZFS:
         if old_snap == new_snap:
             raise ValueError("Cannot send stream, snapshots are identical.")
         print(f"  {old_snap} -> {new_snap}")
-        sender = Popen(
+        stream = Popen(
             [config.ZFS, "send", "-R", "-I", str(old_snap), str(new_snap)], stdout=PIPE
         )
-        return sender
+        return stream
 
     @staticmethod
     def receive(stream: Popen[str], pool: Pool):