diff --git a/common/skin/dactyl.css b/common/skin/dactyl.css
index 5282a48e..44a37eae 100644
--- a/common/skin/dactyl.css
+++ b/common/skin/dactyl.css
@@ -223,4 +223,20 @@ statusbarpanel {
 
 }
 
+@-moz-document url(chrome://browser/content/browser.xul) {
+
+/* Fix ginormous Australis tabs. */
+.tab-background > * {
+    min-height: 24px !important;
+    max-height: 24px !important;
+}
+
+.tab-background > :-moz-any(.tab-background-start, .tab-background-end)::after {
+    background-size: 30px 24px !important;
+    max-height: 24px !important;
+    min-height: 24px !important;
+}
+
+}
+
 /* vim: set fdm=marker sw=4 ts=4 et: */