diff --git a/src/zen/common/ZenCommonUtils.mjs b/src/zen/common/ZenCommonUtils.mjs
index 7237eae9..fab73404 100644
--- a/src/zen/common/ZenCommonUtils.mjs
+++ b/src/zen/common/ZenCommonUtils.mjs
@@ -72,7 +72,7 @@ var gZenCommonActions = {
       let transferable = Cc['@mozilla.org/widget/transferable;1'].createInstance(
         Ci.nsITransferable
       );
-      transferable.init(getLoadContext());
+      transferable.init(window.docShell.QueryInterface(Ci.nsILoadContext));
       transferable.addDataFlavor('text/plain');
       transferable.setTransferData('text/plain', str);
       Services.clipboard.setData(transferable, null, Ci.nsIClipboard.kGlobalClipboard);
@@ -110,7 +110,7 @@ var gZenCommonActions = {
       let transferable = Cc['@mozilla.org/widget/transferable;1'].createInstance(
         Ci.nsITransferable
       );
-      transferable.init(getLoadContext());
+      transferable.init(window.docShell.QueryInterface(Ci.nsILoadContext));
       transferable.addDataFlavor('text/plain');
       transferable.setTransferData('text/plain', str);
       Services.clipboard.setData(transferable, null, Ci.nsIClipboard.kGlobalClipboard);
diff --git a/src/zen/common/styles/zen-browser-ui.css b/src/zen/common/styles/zen-browser-ui.css
index a82d2b18..a8bdeda1 100644
--- a/src/zen/common/styles/zen-browser-ui.css
+++ b/src/zen/common/styles/zen-browser-ui.css
@@ -104,7 +104,7 @@
   #zen-main-app-wrapper,
   #zen-appcontent-wrapper,
   #zen-sidebar-splitter {
-    appearance: -moz-window-sidebar !important;
+    appearance: -moz-sidebar !important;
   }
 }