diff --git a/README.md b/README.md
index 1ae5ffc..e95c295 100644
--- a/README.md
+++ b/README.md
@@ -166,7 +166,7 @@ metadata:
     index: true
     follow: true
   openGraph:
-    siteName: 'Example'
+    site_name: 'Example'
     images:
       - url: '~/assets/images/default.jpg'
         width: 1200
diff --git a/src/components/common/Metadata.astro b/src/components/common/Metadata.astro
index 810aa3e..2e6ecc6 100644
--- a/src/components/common/Metadata.astro
+++ b/src/components/common/Metadata.astro
@@ -34,7 +34,7 @@ const seoProps: AstroSeoProps = merge(
     description: undefined,
     openGraph: {
       url: canonical,
-      siteName: SITE_CONFIG?.name,
+      site_name: SITE_CONFIG?.name,
       images: [],
       locale: I18N_CONFIG?.language || 'en',
       type: 'website',
diff --git a/src/config.yaml b/src/config.yaml
index 0bcbd28..d9f1bcf 100644
--- a/src/config.yaml
+++ b/src/config.yaml
@@ -16,7 +16,7 @@ metadata:
     index: true
     follow: true
   openGraph:
-    siteName: AstroWind
+    site_name: AstroWind
     images:
       - url: '~/assets/images/default.png'
         width: 1200