diff --git a/userChrome.css b/userChrome.css
index d220e9d..72cfdd8 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -655,6 +655,7 @@
   #appMenu-fxa-status2[fxastatus=signedin] #appMenu-fxa-label2::before {
     /* url("https://profile.accounts.firefox.com/v1/avatar/a") */
     content: '';
+    border-radius: 50% !important;
     background-size: 16px !important;
     background-image: var(--avatar-image-url) !important;
   }