diff --git a/src/browser/base/content/browser-box-inc-xhtml.patch b/src/browser/base/content/browser-box-inc-xhtml.patch
index 7dfb9ea6f..9c8dbcb9f 100644
--- a/src/browser/base/content/browser-box-inc-xhtml.patch
+++ b/src/browser/base/content/browser-box-inc-xhtml.patch
@@ -1,5 +1,5 @@
 diff --git a/browser/base/content/browser-box.inc.xhtml b/browser/base/content/browser-box.inc.xhtml
-index afa7f8e7dd74173bf2c696bd96f7e86e8b0126bc..4847c24923f673e91eb7fb65ea6b037f38062405 100644
+index afa7f8e7dd..68aa587863 100644
 --- a/browser/base/content/browser-box.inc.xhtml
 +++ b/browser/base/content/browser-box.inc.xhtml
 @@ -25,7 +25,15 @@
diff --git a/src/zen/common/ZenStartup.mjs b/src/zen/common/ZenStartup.mjs
index 6bfdbd62d..dfa1844df 100644
--- a/src/zen/common/ZenStartup.mjs
+++ b/src/zen/common/ZenStartup.mjs
@@ -144,7 +144,7 @@
       const browser = document.getElementById('browser');
       browser.prepend(gNavToolbox);
 
-      const sidebarPanelWrapper = document.getElementById('tabbrowser-tabbox');
+      const sidebarPanelWrapper = document.getElementById('zen-tabbox-wrapper');
       for (let id of kElementsToAppend) {
         const elem = document.getElementById(id);
         if (elem) {
diff --git a/src/zen/common/styles/zen-sidebar.css b/src/zen/common/styles/zen-sidebar.css
index c6275cfd0..1aaac06f2 100644
--- a/src/zen/common/styles/zen-sidebar.css
+++ b/src/zen/common/styles/zen-sidebar.css
@@ -8,7 +8,7 @@
 #zen-tabbox-wrapper {
   & #sidebar-splitter {
     opacity: 0;
-    margin: 0 calc(-1 * var(--zen-element-separation) + 2px);
+    margin: 0 calc(-1 * var(--zen-element-separation) + 8px);
   }
 
   & #sidebar-box {
@@ -17,14 +17,12 @@
     overflow: hidden;
   }
 
-  & #tabbrowser-tabbox[sidebar-positionend] {
-    & #sidebar-box {
-      order: 8 !important;
-    }
+  & #sidebar-box[sidebar-positionend] {
+    order: 8 !important;
+  }
 
-    & #sidebar-splitter {
-      order: 7 !important;
-    }
+  #sidebar-box[sidebar-positionend] + #sidebar-splitter {
+    order: 7 !important;
   }
 }