diff --git a/source/conf.py b/source/conf.py
index 54073b7..622fb60 100644
--- a/source/conf.py
+++ b/source/conf.py
@@ -121,7 +121,7 @@
         {
             "name": "Twitter",
             "url": "https://twitter.com/OpenBabel",
-            "icon": "fa-brands fa-square-twitter",
+            "icon": "fa-brands fa-square-x-twitter",
         },
     ],
 }