diff --git a/lib/ika_conjugations/kana_kanji.rb b/lib/ika_conjugations/kana_kanji.rb
index 9099242..20f0f82 100644
--- a/lib/ika_conjugations/kana_kanji.rb
+++ b/lib/ika_conjugations/kana_kanji.rb
@@ -1,7 +1,7 @@
 module IkaConjugations
   U_VOWEL_CHANGES = {
     "る" => { "a" => "ら", "i" => "り", "u" => "る", "e" => "れ", "o" => "ろ" },
-    "う" => { "a" => "あ", "i" => "い", "u" => "う", "e" => "え", "o" => "お" },
+    "う" => { "a" => "わ", "i" => "い", "u" => "う", "e" => "え", "o" => "お" },
     "つ" => { "a" => "た", "i" => "ち", "u" => "つ", "e" => "て", "o" => "と" },
     "す" => { "a" => "さ", "i" => "し", "u" => "す", "e" => "せ", "o" => "そ" },
     "く" => { "a" => "か", "i" => "き", "u" => "く", "e" => "け", "o" => "こ" },
diff --git a/test/ika_conjugations/test_kana_kanji.rb b/test/ika_conjugations/test_kana_kanji.rb
index 0bae5ab..5785c02 100644
--- a/test/ika_conjugations/test_kana_kanji.rb
+++ b/test/ika_conjugations/test_kana_kanji.rb
@@ -44,7 +44,7 @@ module IkaConjugations
 
       au = KanaKanji.new("会う", "あう")
       assert_equal "う", au.last_character
-      assert_equal "あ", au.last_character("a")
+      assert_equal "わ", au.last_character("a")
       assert_equal "い", au.last_character("i")
       assert_equal "う", au.last_character("u")
       assert_equal "え", au.last_character("e")
diff --git a/test/ika_conjugations/test_verb.rb b/test/ika_conjugations/test_verb.rb
index d93b7eb..7ba4337 100644
--- a/test/ika_conjugations/test_verb.rb
+++ b/test/ika_conjugations/test_verb.rb
@@ -4,7 +4,7 @@ require "minitest/autorun"
 module IkaConjugations
   class TestVerb < Minitest::Test
     def setup
-      @miru = Verb::Ichidan.new("見る", "みる", "to look")
+      @miru = Verb::Ichidan.new("見る", "みる", "to see")
       @nomu = Verb::Godan.new("飲む", "のむ", "to drink")
       @au = Verb::Godan.new("会う", "あう", "to meet")
       @matsu = Verb::Godan.new("待つ", "まつ", "to wait")
@@ -111,6 +111,8 @@ module IkaConjugations
       assert_equal "連れて来ない", @tsuretekuru.short_form_present_negative.kanji
       assert_equal "つれてこない", @tsuretekuru.short_form_present_negative.kana
       assert_equal "ない", @aru.short_form_present_negative.kana
+      assert_equal "会わない", @au.short_form_present_negative.kanji
+      assert_equal "あわない", @au.short_form_present_negative.kana
     end
 
     def test_long_form_past_positive
@@ -175,6 +177,8 @@ module IkaConjugations
       assert_equal "連れて来なかった", @tsuretekuru.short_form_past_negative.kanji
       assert_equal "つれてこなかった", @tsuretekuru.short_form_past_negative.kana
       assert_equal "なかった", @aru.short_form_past_negative.kana
+      assert_equal "会わなかった", @au.short_form_past_negative.kanji
+      assert_equal "あわなかった", @au.short_form_past_negative.kana
     end
 
     def test_desire
@@ -196,6 +200,7 @@ module IkaConjugations
     def test_potential
       assert_equal "見られる", @miru.potential.dictionary.kanji
       assert_equal "みられる", @miru.potential.dictionary.kana
+      assert_equal "to be able to see", @miru.potential.definition
       assert_equal "飲める", @nomu.potential.dictionary.kanji
       assert_equal "のめる", @nomu.potential.dictionary.kana
       assert_equal "できる", @suru.potential.dictionary.kanji