diff --git a/application/palemoon/themes/linux/browser.css b/application/palemoon/themes/linux/browser.css
index 933067c2bc..01b3f5c9e5 100644
--- a/application/palemoon/themes/linux/browser.css
+++ b/application/palemoon/themes/linux/browser.css
@@ -1608,7 +1608,7 @@ richlistitem[type~="action"][actiontype="switchtab"] > .ac-url-box > .ac-action-
 }
 
 /* When the tab bar is collapsed, show a 1px border in its place. */
-#TabsToolbar[collapsed="true"] {
+#TabsToolbar[tabsontop="false"][collapsed="true"] {
   visibility: visible;
   height: 1px;
   border-bottom-width: 1px;
diff --git a/application/palemoon/themes/osx/browser.css b/application/palemoon/themes/osx/browser.css
index 20e8c5eacb..6d0d92015b 100644
--- a/application/palemoon/themes/osx/browser.css
+++ b/application/palemoon/themes/osx/browser.css
@@ -1631,7 +1631,7 @@ richlistitem[type~="action"][actiontype="switchtab"][selected="true"] > .ac-url-
 }
 
 /* When the tab bar is collapsed, show a 1px border in its place. */
-#TabsToolbar[collapsed="true"] {
+#TabsToolbar[tabsontop="false"][collapsed="true"] {
   visibility: visible;
   height: 1px;
   border-bottom-width: 1px;
diff --git a/application/palemoon/themes/windows/browser.css b/application/palemoon/themes/windows/browser.css
index aae36c5399..9f32b59cf9 100644
--- a/application/palemoon/themes/windows/browser.css
+++ b/application/palemoon/themes/windows/browser.css
@@ -1844,7 +1844,7 @@ richlistitem[type~="action"][actiontype="switchtab"] > .ac-url-box > .ac-action-
 }
 
 /* When the tab bar is collapsed, show a 1px border in its place. */
-#TabsToolbar[collapsed="true"] {
+#TabsToolbar[tabsontop="false"][collapsed="true"] {
   visibility: visible;
   height: 1px;
   border-bottom-width: 1px;