diff --git a/mozilla/themes/classic/communicator/prefpanels.css b/mozilla/themes/classic/communicator/prefpanels.css
index f813c9507f7..f81a014c8f6 100644
--- a/mozilla/themes/classic/communicator/prefpanels.css
+++ b/mozilla/themes/classic/communicator/prefpanels.css
@@ -85,9 +85,3 @@
 #mouseWheelMode {
   width: 9em;
 }
-
-/* ::::: Smart Browsing ::::: */
-
-#disabledDomains {
-  max-height: 13em;
-}
diff --git a/mozilla/themes/modern/communicator/prefpanels.css b/mozilla/themes/modern/communicator/prefpanels.css
index 8871b5e05e0..f81a014c8f6 100644
--- a/mozilla/themes/modern/communicator/prefpanels.css
+++ b/mozilla/themes/modern/communicator/prefpanels.css
@@ -85,10 +85,3 @@
 #mouseWheelMode {
   width: 9em;
 }
-
-/* ::::: Smart Browsing ::::: */
-
-#disabledDomains {
-  max-height: 13em;
-}
-