diff --git a/api/controllers/AuthenticationController.php b/api/controllers/AuthenticationController.php
index 125066b..07555d6 100644
--- a/api/controllers/AuthenticationController.php
+++ b/api/controllers/AuthenticationController.php
@@ -69,7 +69,7 @@ class AuthenticationController extends Controller {
                 'errors' => $this->normalizeModelErrors($model->getErrors()),
             ];
 
-            if (ArrayHelper::getValue($data['errors'], 'login') === 'error.email_frequency') {
+            if (ArrayHelper::getValue($data['errors'], 'login') === 'error.recently_sent_message') {
                 $emailActivation = $model->getEmailActivation();
                 $data['data'] = [
                     'canRepeatIn' => $emailActivation->canRepeatIn(),
diff --git a/api/models/authentication/ForgotPasswordForm.php b/api/models/authentication/ForgotPasswordForm.php
index f1102b2..78f2757 100644
--- a/api/models/authentication/ForgotPasswordForm.php
+++ b/api/models/authentication/ForgotPasswordForm.php
@@ -46,7 +46,7 @@ class ForgotPasswordForm extends ApiForm {
         if (!$this->hasErrors()) {
             $emailConfirmation = $this->getEmailActivation();
             if ($emailConfirmation !== null && !$emailConfirmation->canRepeat()) {
-                $this->addError($attribute, 'error.email_frequency');
+                $this->addError($attribute, 'error.recently_sent_message');
             }
         }
     }
diff --git a/api/models/authentication/RegistrationForm.php b/api/models/authentication/RegistrationForm.php
index 574ceb5..61d066a 100644
--- a/api/models/authentication/RegistrationForm.php
+++ b/api/models/authentication/RegistrationForm.php
@@ -27,7 +27,7 @@ class RegistrationForm extends ApiForm {
     public function rules() {
         return [
             [[], ReCaptchaValidator::class, 'message' => 'error.captcha_invalid', 'when' => !YII_ENV_TEST],
-            ['rulesAgreement', 'required', 'message' => 'error.you_must_accept_rules'],
+            ['rulesAgreement', 'required', 'message' => 'error.rulesAgreement_required'],
 
             ['username', 'validateUsername', 'skipOnEmpty' => false],
             ['email', 'validateEmail', 'skipOnEmpty' => false],
diff --git a/api/models/base/KeyConfirmationForm.php b/api/models/base/KeyConfirmationForm.php
index bc23c73..07f50eb 100644
--- a/api/models/base/KeyConfirmationForm.php
+++ b/api/models/base/KeyConfirmationForm.php
@@ -13,7 +13,7 @@ class KeyConfirmationForm extends ApiForm {
     public function rules() {
         return [
             // TODO: нужно провалидировать количество попыток ввода кода для определённого IP адреса и в случае чего запросить капчу
-            ['key', 'required', 'message' => 'error.key_is_required'],
+            ['key', 'required', 'message' => 'error.key_required'],
             ['key', EmailActivationKeyValidator::class],
         ];
     }
diff --git a/tests/codeception/api/functional/EmailConfirmationCest.php b/tests/codeception/api/functional/EmailConfirmationCest.php
index 1fe0dc0..2f4e8da 100644
--- a/tests/codeception/api/functional/EmailConfirmationCest.php
+++ b/tests/codeception/api/functional/EmailConfirmationCest.php
@@ -13,7 +13,7 @@ class EmailConfirmationCest {
         $I->canSeeResponseContainsJson([
             'success' => false,
             'errors' => [
-                'key' => 'error.key_is_required',
+                'key' => 'error.key_required',
             ],
         ]);
 
diff --git a/tests/codeception/api/functional/ForgotPasswordCest.php b/tests/codeception/api/functional/ForgotPasswordCest.php
index c39662d..5f36a93 100644
--- a/tests/codeception/api/functional/ForgotPasswordCest.php
+++ b/tests/codeception/api/functional/ForgotPasswordCest.php
@@ -39,7 +39,7 @@ class ForgotPasswordCest {
         $I->canSeeResponseContainsJson([
             'success' => false,
             'errors' => [
-                'login' => 'error.email_frequency',
+                'login' => 'error.recently_sent_message',
             ],
         ]);
         $I->canSeeResponseJsonMatchesJsonPath('$.data.canRepeatIn');
diff --git a/tests/codeception/api/functional/RegisterCest.php b/tests/codeception/api/functional/RegisterCest.php
index 608bb7c..210afb3 100644
--- a/tests/codeception/api/functional/RegisterCest.php
+++ b/tests/codeception/api/functional/RegisterCest.php
@@ -18,7 +18,7 @@ class RegisterCest {
     public function testIncorrectRegistration(FunctionalTester $I) {
         $route = new SignupRoute($I);
 
-        $I->wantTo('get error.you_must_accept_rules if we don\'t accept rules');
+        $I->wantTo('get error.rulesAgreement_required if we don\'t accept rules');
         $route->register([
             'username' => 'ErickSkrauch',
             'email' => 'erickskrauch@ely.by',
@@ -28,17 +28,17 @@ class RegisterCest {
         $I->canSeeResponseContainsJson([
             'success' => false,
             'errors' => [
-                'rulesAgreement' => 'error.you_must_accept_rules',
+                'rulesAgreement' => 'error.rulesAgreement_required',
             ],
         ]);
 
-        $I->wantTo('don\'t see error.you_must_accept_rules if we accept rules');
+        $I->wantTo('don\'t see error.rulesAgreement_requireds if we accept rules');
         $route->register([
             'rulesAgreement' => true,
         ]);
         $I->cantSeeResponseContainsJson([
             'errors' => [
-                'rulesAgreement' => 'error.you_must_accept_rules',
+                'rulesAgreement' => 'error.rulesAgreement_required',
             ],
         ]);
 
diff --git a/tests/codeception/api/unit/models/authentication/ForgotPasswordFormTest.php b/tests/codeception/api/unit/models/authentication/ForgotPasswordFormTest.php
index a5edf8b..cd9f568 100644
--- a/tests/codeception/api/unit/models/authentication/ForgotPasswordFormTest.php
+++ b/tests/codeception/api/unit/models/authentication/ForgotPasswordFormTest.php
@@ -79,7 +79,7 @@ class ForgotPasswordFormTest extends DbTestCase {
             ]);
 
             $model->validateFrequency('login');
-            expect($model->getErrors('login'))->equals(['error.email_frequency']);
+            expect($model->getErrors('login'))->equals(['error.recently_sent_message']);
         });
 
         $this->specify('empty errors if email was sent a long time ago', function() {