diff --git a/Doc/conf.py b/Doc/conf.py
index a8e376c0ae44fe..5c34250c5e34f3 100644
--- a/Doc/conf.py
+++ b/Doc/conf.py
@@ -576,11 +576,11 @@
     'image': '_static/og-image.png',
     'line_color': '#3776ab',
 }
-ogp_custom_meta_tags = ('<meta name="theme-color" content="#3776ab">',)
+ogp_custom_meta_tags = ['<meta name="theme-color" content="#3776ab">']
 if 'create-social-cards' not in tags:  # noqa: F821
     # Define a static preview image when not creating social cards
     ogp_image = '_static/og-image.png'
-    ogp_custom_meta_tags += (
+    ogp_custom_meta_tags += [
         '<meta property="og:image:width" content="200">',
         '<meta property="og:image:height" content="200">',
-    )
+    ]