diff --git a/DESCRIPTION b/DESCRIPTION
index 1c922d32..c69c4490 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -7,8 +7,9 @@ Authors@R: c(
     person("Kevin", "Ushey", role = c("aut")),
     person(family = "RStudio", role = c("cph"))
     )
-Description: Interface to the Google Cloud Machine Learning Platform which provides
-  cloud tools for training machine learning models.
+Description: Interface to the Google Cloud Machine Learning Platform
+  <https://cloud.google.com/ml-engine>, which provides cloud tools for training machine
+  learning models.
 Depends:
   R (>= 3.3.0), 
   tfruns (>= 1.3)
diff --git a/vignettes/storage.Rmd b/vignettes/storage.Rmd
index 6edca593..cab8979b 100644
--- a/vignettes/storage.Rmd
+++ b/vignettes/storage.Rmd
@@ -77,7 +77,7 @@ train_generator <- flow_images_from_directory(
   gs_local_dir("gs://quarter-deck-529/images/train"),
   image_data_generator(rescale = 1/255),
   target_size = c(150, 150),
-  batch_size = 32
+  batch_size = 32,
   class_mode = "binary"
 )
 ```