diff --git a/userChrome.css b/userChrome.css
index 667e217..13e47ab 100644
--- a/userChrome.css
+++ b/userChrome.css
@@ -674,11 +674,11 @@
     max-height: 38px;
   }
   :root[uidensity="compact"] .toolbar-items,
-  .tabbrowser-tab {
+  :root[uidensity="compact"] .tabbrowser-tab {
     max-height: 36px;
   }
   :root[uidensity="touch"] .toolbar-items,
-  .tabbrowser-tab {
+  :root[uidensity="touch"] .tabbrowser-tab {
     max-height: 45px;
   }