diff --git a/src/Rest/GuildCommand.php b/src/Rest/GuildCommand.php
index 26de3b4d..d1a4e8af 100644
--- a/src/Rest/GuildCommand.php
+++ b/src/Rest/GuildCommand.php
@@ -14,6 +14,11 @@
  */
 class GuildCommand extends HttpResource
 {
+    /**
+     * @see https://discord.com/developers/docs/interactions/application-commands#get-guild-application-command
+     *
+     * @return ExtendedPromiseInterface<\Ragnarok\Fenrir\Parts\ApplicationCommand[]>
+     */
     public function getCommands(string $guildId, string $applicationId, bool $withLocalizations = false): ExtendedPromiseInterface
     {
         $endpoint = Endpoint::bind(Endpoint::GUILD_APPLICATION_COMMANDS, $applicationId, $guildId);
diff --git a/src/Rest/Helpers/Command/CommandOptionBuilder.php b/src/Rest/Helpers/Command/CommandOptionBuilder.php
index 21d93080..9cc0a9a3 100644
--- a/src/Rest/Helpers/Command/CommandOptionBuilder.php
+++ b/src/Rest/Helpers/Command/CommandOptionBuilder.php
@@ -119,18 +119,23 @@ public function getRequired(): ?bool
      *
      * @param array<string, string> $localizedNames `key => locale`, `value => description`
      */
-    public function addChoice(string $name, string|int|float $value, array $localizedNames = []): self
+    public function addChoice(string $name, string|int|float $value, ?array $localizedNames = null): self
     {
         if (!isset($this->data['choices'])) {
             $this->data['choices'] = [];
         }
 
-        $this->data['choices'][] = [
+        $choice = [
             'name' => $name,
-            'name_localizations' => $localizedNames,
             'value' => $value,
         ];
 
+        if ($localizedNames) {
+            $choice['name_localizations'] = $localizedNames;
+        }
+
+        $this->data['choices'][] = $choice;
+
         return $this;
     }
 
diff --git a/tests/Rest/Helpers/Command/CommandOptionBuilderTest.php b/tests/Rest/Helpers/Command/CommandOptionBuilderTest.php
index e5d3d871..95cbb4a0 100644
--- a/tests/Rest/Helpers/Command/CommandOptionBuilderTest.php
+++ b/tests/Rest/Helpers/Command/CommandOptionBuilderTest.php
@@ -90,13 +90,13 @@ public function testAddChoice(): void
         $builder->addChoice('choice-2', 'choice-value-2');
 
         $this->assertEquals([
-            ['name' => 'choice-1', 'value' => 'choice-value-1', 'name_localizations' => []],
-            ['name' => 'choice-2', 'value' => 'choice-value-2', 'name_localizations' => []]
+            ['name' => 'choice-1', 'value' => 'choice-value-1'],
+            ['name' => 'choice-2', 'value' => 'choice-value-2']
         ], $builder->getChoices());
 
         $this->assertEquals([
-            ['name' => 'choice-1', 'value' => 'choice-value-1', 'name_localizations' => []],
-            ['name' => 'choice-2', 'value' => 'choice-value-2', 'name_localizations' => []]
+            ['name' => 'choice-1', 'value' => 'choice-value-1'],
+            ['name' => 'choice-2', 'value' => 'choice-value-2']
         ], $builder->get()['choices']);
     }