diff --git a/spec/fabricators/account_domain_block_fabricator.rb b/spec/fabricators/account_domain_block_fabricator.rb
index fbbddadd5d2..2ad4b67a99b 100644
--- a/spec/fabricators/account_domain_block_fabricator.rb
+++ b/spec/fabricators/account_domain_block_fabricator.rb
@@ -1,4 +1,4 @@
 Fabricator(:account_domain_block) do
-  account_id 1
-  domain     "MyString"
+  account
+  domain 'example.com'
 end
diff --git a/spec/fabricators/account_fabricator.rb b/spec/fabricators/account_fabricator.rb
index 68a75807957..446f8ea2793 100644
--- a/spec/fabricators/account_fabricator.rb
+++ b/spec/fabricators/account_fabricator.rb
@@ -1,4 +1,4 @@
 Fabricator(:account) do
-  username { Faker::Internet.user_name(nil, %w(_)) }
+  username { sequence(:username) { |i| "#{Faker::Internet.user_name(nil, %w(_))}#{i}" } }
   last_webfingered_at { Time.now.utc }
 end
diff --git a/spec/fabricators/preview_card_fabricator.rb b/spec/fabricators/preview_card_fabricator.rb
index 448a94e7ed8..15b33815c6d 100644
--- a/spec/fabricators/preview_card_fabricator.rb
+++ b/spec/fabricators/preview_card_fabricator.rb
@@ -1,5 +1,4 @@
 Fabricator(:preview_card) do
-  status_id 1
-  url       "MyString"
-  html      "MyText"
+  status
+  url 'http://example.com'
 end
diff --git a/spec/fabricators/tag_fabricator.rb b/spec/fabricators/tag_fabricator.rb
index d8304099097..33d57c9281f 100644
--- a/spec/fabricators/tag_fabricator.rb
+++ b/spec/fabricators/tag_fabricator.rb
@@ -1,3 +1,3 @@
 Fabricator(:tag) do
-  name "MyString"
+  name { sequence(:hashtag) { |i| "#{Faker::Lorem.word}#{i}" } }
 end
diff --git a/spec/fabricators/user_fabricator.rb b/spec/fabricators/user_fabricator.rb
index 16b3b1f6f65..cf51fe81d0e 100644
--- a/spec/fabricators/user_fabricator.rb
+++ b/spec/fabricators/user_fabricator.rb
@@ -1,6 +1,6 @@
 Fabricator(:user) do
   account
-  email        { Faker::Internet.email }
+  email        { sequence(:email) { |i| "#{i}#{Faker::Internet.email}" } }
   password     "123456789"
   confirmed_at { Time.now }
 end