diff --git a/frontend/src/pages/biblioteca/index.astro b/frontend/src/pages/biblioteca/index.astro
index 009fc40..54f4c57 100644
--- a/frontend/src/pages/biblioteca/index.astro
+++ b/frontend/src/pages/biblioteca/index.astro
@@ -21,7 +21,7 @@ const libraryItems: {
   title="Biblioteca - Filipe Medeiros"
   ptUrl="/biblioteca"
   enUrl="/library"
-  lang="pt_PT"
+  lang="pt"
 >
   <header class="mb-10">
     <PageTitle class="mb-3">Biblioteca</PageTitle>
diff --git a/frontend/src/pages/blog/[slug]/index.astro b/frontend/src/pages/blog/[slug]/index.astro
index 44830af..c9cd5ce 100644
--- a/frontend/src/pages/blog/[slug]/index.astro
+++ b/frontend/src/pages/blog/[slug]/index.astro
@@ -54,7 +54,7 @@ const { slug } = Astro.params;
   title={`${title} - Filipe Medeiros`}
   ptUrl={`/blogue/${slug}`}
   enUrl={`/blog/${slug}`}
-  lang="en_EN"
+  lang="en"
 >
   <BlogPostMetadata
     slot="metadata"
diff --git a/frontend/src/pages/blog/index.astro b/frontend/src/pages/blog/index.astro
index efde386..8140a5d 100644
--- a/frontend/src/pages/blog/index.astro
+++ b/frontend/src/pages/blog/index.astro
@@ -18,12 +18,7 @@ const posts: {
 });
 ---
 
-<Layout
-  title="Blog - Filipe Medeiros"
-  ptUrl="/blogue"
-  enUrl="/blog"
-  lang="en_EN"
->
+<Layout title="Blog - Filipe Medeiros" ptUrl="/blogue" enUrl="/blog" lang="en">
   <header class="mb-10">
     <PageTitle class="mb-3">Blog</PageTitle>
     <h2>Uma coleção de artigos que vou escrevendo. Sobretudo por diversão.</h2>
diff --git a/frontend/src/pages/blogue/[slug]/index.astro b/frontend/src/pages/blogue/[slug]/index.astro
index 2e67583..895d92b 100644
--- a/frontend/src/pages/blogue/[slug]/index.astro
+++ b/frontend/src/pages/blogue/[slug]/index.astro
@@ -55,7 +55,7 @@ const { slug } = Astro.params;
   title={`${title} - Filipe Medeiros`}
   ptUrl={`/blogue/${slug}`}
   enUrl={`/blog/${slug}`}
-  lang="pt_PT"
+  lang="pt"
 >
   <BlogPostMetadata
     slot="metadata"
diff --git a/frontend/src/pages/blogue/index.astro b/frontend/src/pages/blogue/index.astro
index caf6d4b..b51219e 100644
--- a/frontend/src/pages/blogue/index.astro
+++ b/frontend/src/pages/blogue/index.astro
@@ -17,12 +17,7 @@ const posts: {
 });
 ---
 
-<Layout
-  title="Blog - Filipe Medeiros"
-  ptUrl="/blogue"
-  enUrl="/blog"
-  lang="pt_PT"
->
+<Layout title="Blog - Filipe Medeiros" ptUrl="/blogue" enUrl="/blog" lang="pt">
   <header class="mb-10">
     <PageTitle class="mb-3">Blogue</PageTitle>
     <h2>Uma coleção de artigos que vou escrevendo. Sobretudo por diversão.</h2>
diff --git a/frontend/src/pages/home.astro b/frontend/src/pages/home.astro
index ffb295b..3b7addf 100644
--- a/frontend/src/pages/home.astro
+++ b/frontend/src/pages/home.astro
@@ -5,12 +5,7 @@ import PageTitle from '../components/PageTitle.astro';
 import Layout from '../layouts/Layout.astro';
 ---
 
-<Layout
-  title="Home page - Filipe Medeiros"
-  ptUrl="/"
-  enUrl="/home"
-  lang="en_EN"
->
+<Layout title="Home page - Filipe Medeiros" ptUrl="/" enUrl="/home" lang="en">
   <PageTitle class="mb-10">
     Filipe<br />Medeiros
   </PageTitle>
diff --git a/frontend/src/pages/index.astro b/frontend/src/pages/index.astro
index 91a0f26..8ba59d3 100644
--- a/frontend/src/pages/index.astro
+++ b/frontend/src/pages/index.astro
@@ -9,7 +9,7 @@ import Layout from '../layouts/Layout.astro';
   title="Página inicial - Filipe Medeiros"
   ptUrl="/"
   enUrl="/home"
-  lang="pt_PT"
+  lang="pt"
 >
   <PageTitle class="mb-10">
     Filipe<br />Medeiros
diff --git a/frontend/src/pages/library/index.astro b/frontend/src/pages/library/index.astro
index 4086fce..9c5ef37 100644
--- a/frontend/src/pages/library/index.astro
+++ b/frontend/src/pages/library/index.astro
@@ -21,7 +21,7 @@ const libraryItems: {
   title="Biblioteca - Filipe Medeiros"
   ptUrl="/biblioteca"
   enUrl="/library"
-  lang="en_EN"
+  lang="en"
 >
   <header class="mb-10">
     <PageTitle class="mb-3">Library</PageTitle>