diff --git a/WebFeedGatewayPlugin.php b/WebFeedGatewayPlugin.php
index 10f3926..720a825 100644
--- a/WebFeedGatewayPlugin.php
+++ b/WebFeedGatewayPlugin.php
@@ -25,6 +25,8 @@
 use Exception;
 use PKP\category\Category;
 use PKP\core\Registry;
+use PKP\facades\Locale;
+use PKP\i18n\LocaleConversion;
 use PKP\plugins\GatewayPlugin;
 
 class WebFeedGatewayPlugin extends GatewayPlugin
@@ -126,7 +128,8 @@ public function fetch($args, $request): bool
                     'latestDate' => $latestDate,
                     'feedUrl' => $request->getRequestUrl(),
                     'userGroups' => $userGroups,
-                    'includeIdentifiers' => $includeIdentifiers
+                    'includeIdentifiers' => $includeIdentifiers,
+                    'language' => str_replace('_', '-', str_replace(['@cyrillic', '@latin', '_Latn', '_Cyrl'], '', Locale::getLocale())),
                 ]
             )
             ->setHeaders(['content-type: ' . static::FEED_MIME_TYPE[$feedType] . '; charset=utf-8'])
diff --git a/templates/rss.tpl b/templates/rss.tpl
index 6b15c9e..faaa16a 100644
--- a/templates/rss.tpl
+++ b/templates/rss.tpl
@@ -37,7 +37,7 @@
 		{/if}
 
 		{if $context->getPrimaryLocale()}
-			<dc:language>{$context->getPrimaryLocale()|replace:'_':'-'|strip|escape:"html"}</dc:language>
+			<dc:language>{$language|escape}</dc:language>
 		{/if}
 
 		<prism:publicationName>{$context->getLocalizedName()|strip|escape:"html"}</prism:publicationName>
diff --git a/templates/rss2.tpl b/templates/rss2.tpl
index e0b8565..b48cb6e 100644
--- a/templates/rss2.tpl
+++ b/templates/rss2.tpl
@@ -26,7 +26,7 @@
 
 		{* optional elements *}
 		{if $context->getPrimaryLocale()}
-			<language>{$context->getPrimaryLocale()|replace:'_':'-'|strip|escape:"html"}</language>
+			<language>{$language|escape}</language>
 		{/if}
 
 		{if $context->getLocalizedData('licenseTerms')}