diff --git a/lib/locales/ja.yml b/lib/locales/ja.yml
index a292ce796f..6f75bd0f14 100644
--- a/lib/locales/ja.yml
+++ b/lib/locales/ja.yml
@@ -12,8 +12,8 @@ ja:
         - "#{city_prefix}#{Name.last_name}#{city_suffix}"
         - "#{Name.last_name}#{city_suffix}"
       street_name:
-        - "#{Name.first_name}#{street_suffix}"
-        - "#{Name.last_name}#{street_suffix}"
+        - "#{Name.first_name}"
+        - "#{Name.last_name}"
       default_country: [日本]
     creature:
       cat:
diff --git a/test/support/assert_not_english.rb b/test/support/assert_not_english.rb
new file mode 100644
index 0000000000..b7dabe0cfc
--- /dev/null
+++ b/test/support/assert_not_english.rb
@@ -0,0 +1,5 @@
+# frozen_string_literal: true
+
+def assert_not_english(word)
+  assert_not_match(/[a-zA-Z]/, word)
+end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index e5cfe30bc7..57e4936d51 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -6,6 +6,7 @@
   add_filter ['.bundle', 'lib/extensions', 'test']
 end
 
+require 'test/support/assert_not_english'
 require 'minitest/autorun'
 require 'test/unit'
 require 'rubygems'
diff --git a/test/test_ja_locale.rb b/test/test_ja_locale.rb
index 7ef0eaacf3..4e14ee3ae6 100644
--- a/test/test_ja_locale.rb
+++ b/test/test_ja_locale.rb
@@ -13,16 +13,24 @@ def teardown
 
   def test_ja_address_methods
     assert Faker::Address.postcode.is_a? String
+    assert_not_english(Faker::Address.postcode)
     assert Faker::Address.state.is_a? String
+    assert_not_english(Faker::Address.state)
     assert Faker::Address.state_abbr.is_a? String
+    assert_not_english(Faker::Address.state_abbr)
     assert Faker::Address.city_prefix.is_a? String
+    assert_not_english(Faker::Address.city_prefix)
     assert Faker::Address.city_suffix.is_a? String
+    assert_not_english(Faker::Address.city_suffix)
     assert Faker::Address.city.is_a? String
+    assert_not_english(Faker::Address.city)
     assert Faker::Address.street_name.is_a? String
+    assert_not_english(Faker::Address.street_name)
   end
 
   def test_ja_ancient_methods
     assert Faker::Ancient.god.is_a? String
+    assert_not_english(Faker::Ancient.god)
   end
 
   def test_ja_cat_methods
@@ -36,12 +44,16 @@ def test_ja_color_methods
 
   def test_ja_coffee_methods
     assert Faker::Coffee.country.is_a? String
+    assert_not_english(Faker::Coffee.country)
   end
 
   def test_ja_company_methods
     assert Faker::Company.suffix.is_a? String
+    assert_not_english(Faker::Company.suffix)
     assert Faker::Company.category.is_a? String
+    assert_not_english(Faker::Company.category)
     assert Faker::Company.name.is_a? String
+    assert_not_english(Faker::Company.name)
   end
 
   def test_ja_dog_methods
@@ -51,10 +63,12 @@ def test_ja_dog_methods
 
   def test_ja_food_methods
     assert Faker::Food.sushi.is_a? String
+    assert_not_english(Faker::Food.sushi)
   end
 
   def test_ja_gender_methods
     assert Faker::Gender.binary_type.is_a? String
+    assert_not_english(Faker::Gender.binary_type)
   end
 
   def test_ja_lorem_methods
@@ -65,43 +79,55 @@ def test_ja_lorem_methods
 
   def test_ja_name_methods
     assert Faker::Name.last_name.is_a? String
+    assert_not_english(Faker::Name.last_name)
     assert Faker::Name.first_name.is_a? String
+    assert_not_english(Faker::Name.first_name)
     assert Faker::Name.name.is_a? String
+    assert_not_english(Faker::Name.name)
     assert Faker::Name.name_with_middle.is_a? String
-    assert Faker::Name.female_first_name.is_a? String
-    assert Faker::Name.male_first_name.is_a? String
-    assert Faker::Name.suffix.is_a? String
-    assert Faker::Name.prefix.is_a? String
+    assert_not_english(Faker::Name.name_with_middle)
   end
 
   def test_ja_phone_number_methods
     assert Faker::PhoneNumber.cell_phone.is_a? String
+    assert_not_english(Faker::PhoneNumber.cell_phone)
     assert Faker::PhoneNumber.phone_number.is_a? String
+    assert_not_english(Faker::PhoneNumber.phone_number)
   end
 
   def test_ja_pokemon_methods
     assert Faker::Games::Pokemon.name.is_a? String
+    assert_not_english(Faker::Games::Pokemon.name)
     assert Faker::Games::Pokemon.location.is_a? String
+    assert_not_english(Faker::Games::Pokemon.location)
     assert Faker::Games::Pokemon.move.is_a? String
+    assert_not_english(Faker::Games::Pokemon.move)
   end
 
   def test_ja_zelda_methods
     assert Faker::Games::Zelda.game.is_a? String
+    assert_not_english(Faker::Games::Zelda.game)
   end
 
   def test_ja_restaurant_methods
     assert Faker::Restaurant.name.is_a? String
+    assert_not_english(Faker::Restaurant.name)
     assert Faker::Restaurant.type.is_a? String
+    assert_not_english(Faker::Restaurant.type)
   end
 
   def test_ja_space_methods
     assert Faker::Space.planet.is_a? String
+    assert_not_english(Faker::Space.planet)
     assert Faker::Space.galaxy.is_a? String
   end
 
   def test_ja_university_methods
     assert Faker::University.prefix.is_a? String
+    assert_not_english(Faker::University.prefix)
     assert Faker::University.suffix.is_a? String
+    assert_not_english(Faker::University.suffix)
     assert Faker::University.name.is_a? String
+    assert_not_english(Faker::University.name)
   end
 end