diff --git a/src/voku/helper/data/ascii_by_languages.php b/src/voku/helper/data/ascii_by_languages.php
index 1ec89ac..5d75f32 100644
--- a/src/voku/helper/data/ascii_by_languages.php
+++ b/src/voku/helper/data/ascii_by_languages.php
@@ -1011,10 +1011,10 @@
         'ж' => 'zh',
         'З' => 'Z',
         'з' => 'z',
-        'И' => 'Ich',
+        'И' => 'I',
         'и' => 'i',
-        'Й' => 'J',
-        'й' => 'j',
+        'Й' => 'Y',
+        'й' => 'y',
         'К' => 'K',
         'к' => 'k',
         'Л' => 'L',
@@ -1039,26 +1039,26 @@
         'ф' => 'f',
         'Х' => 'H',
         'х' => 'h',
-        'Ц' => 'C',
-        'ц' => 'c',
+        'Ц' => 'Ts',
+        'ц' => 'ts',
         'Ч' => 'Ch',
         'ч' => 'ch',
         'ш' => 'sh',
         'Ш' => 'Sh',
-        'Щ' => 'Shh',
-        'щ' => 'shh',
+        'Щ' => 'Sch',
+        'щ' => 'sch',
         'Ъ' => '',
         'ъ' => '',
         'Ы' => 'Y',
         'ы' => 'y',
         'Ь' => '',
         'ь' => '',
-        'Э' => 'Je',
-        'э' => 'je',
-        'Ю' => 'Ju',
-        'ю' => 'ju',
-        'Я' => 'Ja',
-        'я' => 'ja',
+        'Э' => 'E',
+        'э' => 'e',
+        'Ю' => 'Yu',
+        'ю' => 'yu',
+        'Я' => 'Ya',
+        'я' => 'ya',
     ],
     // Russian - Passport (2013), ICAO
     // -> https://en.m.wikipedia.org/wiki/Romanization_of_Russian#content-collapsible-block-1
diff --git a/tests/AsciiGlobalTest.php b/tests/AsciiGlobalTest.php
index d7cb1d6..db63a49 100644
--- a/tests/AsciiGlobalTest.php
+++ b/tests/AsciiGlobalTest.php
@@ -465,7 +465,7 @@ public function toAsciiProvider(): array
             ['Universita', 'Università', ASCII::ITALIAN_LANGUAGE_CODE],
             ['Makedonska azbuka', 'Македонска азбука', ASCII::MACEDONIAN_LANGUAGE_CODE],
             ['Eu nao falo portugues.', 'Eu não falo português.', ASCII::PORTUGUESE_LANGUAGE_CODE],
-            ['lysaja gora', 'лысая гора', ASCII::RUSSIAN_LANGUAGE_CODE],
+            ['lysaya gora', 'лысая гора', ASCII::RUSSIAN_LANGUAGE_CODE],
             ['lysaia gora', 'лысая гора', ASCII::RUSSIAN_PASSPORT_2013_LANGUAGE_CODE],
             ['ly\'saya gora', 'лысая гора', ASCII::RUSSIAN_GOST_2000_B_LANGUAGE_CODE],
             ['shhuka', 'щука'],
@@ -504,7 +504,7 @@ public function toAsciiProvider(): array
             ['sveucilist', 'sveučilišt', ASCII::CROATIAN_LANGUAGE_CODE],
             ['paivakoti', 'päiväkoti', ASCII::FINNISH_LANGUAGE_CODE],
             ['bavshvebi', 'ბავშვები', ASCII::GEORGIAN_LANGUAGE_CODE],
-            ['shhuka', 'щука', ASCII::RUSSIAN_LANGUAGE_CODE],
+            ['schuka', 'щука', ASCII::RUSSIAN_LANGUAGE_CODE],
             ['shchuka', 'щука', ASCII::RUSSIAN_PASSPORT_2013_LANGUAGE_CODE],
             ['shhuka', 'щука', ASCII::RUSSIAN_GOST_2000_B_LANGUAGE_CODE],
             ['diti', 'діти', ASCII::UKRAINIAN_LANGUAGE_CODE],