diff --git a/src/browser/themes/shared/zen-browser-shared.css b/src/browser/themes/shared/zen-browser-shared.css
index 4b94ced23..ce5fbff6e 100644
--- a/src/browser/themes/shared/zen-browser-shared.css
+++ b/src/browser/themes/shared/zen-browser-shared.css
@@ -365,6 +365,7 @@ toolbarbutton#scrollbutton-up {
 
 .tabbrowser-tab[pinned] {
   position: relative !important;
+  display: flex !important;
 }
 
 #tabbrowser-tabs:has(.tabbrowser-tab[pinned]) .tabbrowser-tab:nth-child(1 of :not([pinned]):not([hidden])) {