diff --git a/image_prediction/pipeline.py b/image_prediction/pipeline.py
index c14b08b..fed0c89 100644
--- a/image_prediction/pipeline.py
+++ b/image_prediction/pipeline.py
@@ -48,7 +48,7 @@ class Pipeline:
             extract,  # ... image-metadata-pairs as a stream
             split,  # ... into an image stream and a metadata stream
             pairwise_apply(classify, identity),  # ... apply functions to the streams pairwise
-            join,  # ... the streams
+            join,  # ... the streams by zipping
             reformat,  # ... the items
         )