diff --git a/src/metabase/models/table.clj b/src/metabase/models/table.clj
index afebba6ca0ff40ed7c1d8473582d03fc1b3e9aa0..c72a0eb0f45245c94336677f1c8b18771972a8a3 100644
--- a/src/metabase/models/table.clj
+++ b/src/metabase/models/table.clj
@@ -23,7 +23,8 @@
   #{:person :event :photo :place})
 
 (def ^:const visibility-types
-  "Valid values for `Table.visibility_type` (field may also be `nil`)."
+  "Valid values for `Table.visibility_type` (field may also be `nil`).
+   (Basically any non-nil value is a reason for hiding the table.)"
   #{:hidden :technical :cruft})
 
 
diff --git a/test/metabase/api/database_test.clj b/test/metabase/api/database_test.clj
index 5fbe5aa32a20418186f59982dcedb0217e27cf11..da4c07a7e28f0bd915b78d16ff824e15d2858a86 100644
--- a/test/metabase/api/database_test.clj
+++ b/test/metabase/api/database_test.clj
@@ -126,11 +126,6 @@
       (dissoc (into {} (db/select-one [Database :name :engine :details :is_full_sync], :id db-id))
               :features)))
 
-:description             nil
-                               :entity_type             nil
-                               :caveats                 nil
-                               :points_of_interest      nil
-                               :visibility_type         nil
 (def ^:private default-table-details
   {:description             nil
    :entity_name             nil
diff --git a/test/metabase/test/mock/moviedb.clj b/test/metabase/test/mock/moviedb.clj
index f32aea0fe031b746c45d57e2a716497103bac326..cf011e4d95f3fc3f0c402d5bebfa9bdc9f6bdf37 100644
--- a/test/metabase/test/mock/moviedb.clj
+++ b/test/metabase/test/mock/moviedb.clj
@@ -58,23 +58,23 @@
 (extend MovieDbDriver
   driver/IDriver
   (merge driver/IDriverDefaultsMixin
-         {:analyze-table       (constantly nil)
-          :describe-database   (fn [_ {:keys [exclude-tables]}]
-                                 (let [tables (for [table (vals moviedb-tables)
-                                                    :when (not (contains? exclude-tables (:name table)))]
-                                                (select-keys table [:schema :name]))]
-                                   {:tables (set tables)}))
-          :describe-table      (fn [_ _ table]
-                                 (-> (get moviedb-tables (:name table))
-                                     (dissoc :fks)))
-          :describe-table-fks  (fn [_ _ table]
-                                 (-> (get moviedb-tables (:name table))
-                                     :fks
-                                     set))
-          :features            (constantly #{:foreign-keys})
-          :details-fields      (constantly [])
-          :table-rows-seq      (constantly [{:keypath "movies.filming.description", :value "If the movie is currently being filmed."}
-                                            {:keypath "movies.description", :value "A cinematic adventure."}])}))
+         {:analyze-table      (constantly nil)
+          :describe-database  (fn [_ {:keys [exclude-tables]}]
+                                (let [tables (for [table (vals moviedb-tables)
+                                                   :when (not (contains? exclude-tables (:name table)))]
+                                               (select-keys table [:schema :name]))]
+                                  {:tables (set tables)}))
+          :describe-table     (fn [_ _ table]
+                                (-> (get moviedb-tables (:name table))
+                                    (dissoc :fks)))
+          :describe-table-fks (fn [_ _ table]
+                                (-> (get moviedb-tables (:name table))
+                                    :fks
+                                    set))
+          :features           (constantly #{:foreign-keys})
+          :details-fields     (constantly [])
+          :table-rows-seq     (constantly [{:keypath "movies.filming.description", :value "If the movie is currently being filmed."}
+                                           {:keypath "movies.description", :value "A cinematic adventure."}])}))
 
 (driver/register-driver! :moviedb (MovieDbDriver.))