diff --git a/db/migrate/20181114180205_change_descendant_names_to_array_on_tag_implications.rb b/db/migrate/20181114180205_change_descendant_names_to_array_on_tag_implications.rb
index f7763cdeb..a6016f065 100644
--- a/db/migrate/20181114180205_change_descendant_names_to_array_on_tag_implications.rb
+++ b/db/migrate/20181114180205_change_descendant_names_to_array_on_tag_implications.rb
@@ -1,7 +1,7 @@
 class ChangeDescendantNamesToArrayOnTagImplications < ActiveRecord::Migration[5.2]
   def up
     TagImplication.without_timeout do
-      change_column_default :tag_implications, :descendant_names, from: '', to: false
+      change_column_default :tag_implications, :descendant_names, from: '', to: nil
       change_column :tag_implications, :descendant_names, "text[]", using: "string_to_array(descendant_names, ' ')::text[]", default: "{}"
     end
   end
diff --git a/db/migrate/20181114185032_change_strings_to_arrays_on_artist_versions.rb b/db/migrate/20181114185032_change_strings_to_arrays_on_artist_versions.rb
index a9ba74f62..2eebd2779 100644
--- a/db/migrate/20181114185032_change_strings_to_arrays_on_artist_versions.rb
+++ b/db/migrate/20181114185032_change_strings_to_arrays_on_artist_versions.rb
@@ -1,7 +1,7 @@
 class ChangeStringsToArraysOnArtistVersions < ActiveRecord::Migration[5.2]
   def up
     ArtistVersion.without_timeout do
-      change_column_default :artist_versions, :other_names, from: '', to: false
+      change_column_default :artist_versions, :other_names, from: '', to: nil
       change_column :artist_versions, :other_names, "text[]", using: "array_remove(regexp_split_to_array(other_names, '\\s+'), '')", default: "{}"
 
       change_column :artist_versions, :url_string, "text[]", using: "array_remove(regexp_split_to_array(url_string, '\\s+'), '')", default: "{}"