diff --git a/src/Extend/LanguagePack.php b/src/Extend/LanguagePack.php
index 13599acad..cb74d1cac 100644
--- a/src/Extend/LanguagePack.php
+++ b/src/Extend/LanguagePack.php
@@ -11,6 +11,7 @@ namespace Flarum\Extend;
 
 use DirectoryIterator;
 use Flarum\Extension\Extension;
+use Flarum\Extension\ExtensionManager;
 use Flarum\Locale\LocaleManager;
 use Illuminate\Contracts\Container\Container;
 use InvalidArgumentException;
@@ -18,6 +19,11 @@ use RuntimeException;
 
 class LanguagePack implements ExtenderInterface, LifecycleInterface
 {
+    private const CORE_LOCALE_FILES = [
+        'core',
+        'validation',
+    ];
+
     private $path;
 
     /**
@@ -49,13 +55,13 @@ class LanguagePack implements ExtenderInterface, LifecycleInterface
 
         $container->resolving(
             LocaleManager::class,
-            function (LocaleManager $locales) use ($extension, $locale, $title) {
-                $this->registerLocale($locales, $extension, $locale, $title);
+            function (LocaleManager $locales) use ($extension, $locale, $title, $container) {
+                $this->registerLocale($container, $locales, $extension, $locale, $title);
             }
         );
     }
 
-    private function registerLocale(LocaleManager $locales, Extension $extension, $locale, $title)
+    private function registerLocale(Container $container, LocaleManager $locales, Extension $extension, $locale, $title)
     {
         $locales->addLocale($locale, $title);
 
@@ -75,8 +81,17 @@ class LanguagePack implements ExtenderInterface, LifecycleInterface
             $locales->addCssFile($locale, $file);
         }
 
+        /** @var ExtensionManager $extensions */
+        $extensions = $container->make(ExtensionManager::class);
+
         foreach (new DirectoryIterator($directory) as $file) {
-            if ($file->isFile() && in_array($file->getExtension(), ['yml', 'yaml'])) {
+            $slug = $file->getBasename(".{$file->getExtension()}");
+
+            if (
+                $file->isFile()
+                && in_array($file->getExtension(), ['yml', 'yaml'], true)
+                && (in_array($slug, self::CORE_LOCALE_FILES, true) || $extensions->isEnabled($slug))
+            ) {
                 $locales->addTranslations($locale, $file->getPathname());
             }
         }