diff --git a/quartz/components/Head.tsx b/quartz/components/Head.tsx
index 1f9bd1585..3e31e68c0 100644
--- a/quartz/components/Head.tsx
+++ b/quartz/components/Head.tsx
@@ -136,6 +136,10 @@ export default (() => {
       ogImagePath = `https://${cfg.baseUrl}/static/${frontmatterImgUrl}`
     }
 
+    // Url of current page
+    const socialUrl =
+      fileData.slug === "404" ? url.toString() : joinSegments(url.toString(), fileData.slug!)
+
     return (
       <head>
         <title>{title}</title>
@@ -172,8 +176,8 @@ export default (() => {
             <meta name="twitter:image" content={ogImagePath} />
             <meta property="og:image" content={ogImagePath} />
             <meta property="twitter:domain" content={cfg.baseUrl}></meta>
-            <meta property="og:url" content={`https://${cfg.baseUrl}/${fileData.slug}`}></meta>
-            <meta property="twitter:url" content={`https://${cfg.baseUrl}/${fileData.slug}`}></meta>
+            <meta property="og:url" content={socialUrl}></meta>
+            <meta property="twitter:url" content={socialUrl}></meta>
           </>
         )}
         <link rel="icon" href={iconPath} />
