diff --git a/mozilla/xpfe/appshell/src/nsContentTreeOwner.cpp b/mozilla/xpfe/appshell/src/nsContentTreeOwner.cpp
index fd9b6f9a2ae..8b5e8661b7d 100644
--- a/mozilla/xpfe/appshell/src/nsContentTreeOwner.cpp
+++ b/mozilla/xpfe/appshell/src/nsContentTreeOwner.cpp
@@ -599,7 +599,8 @@ NS_IMETHODIMP nsContentTreeOwner::SetTitle(const PRUnichar* aTitle)
       title = docTitle;
     }
   
-    title += mTitleSeparator + mWindowTitleModifier;
+    if (!mWindowTitleModifier.IsEmpty())
+      title += mTitleSeparator + mWindowTitleModifier;
   }
   else
     title.Assign(mWindowTitleModifier); // Title will just be plain "Mozilla"
@@ -697,9 +698,8 @@ void nsContentTreeOwner::XULWindow(nsXULWindow* aXULWindow)
                 mTitleDefault = mWindowTitleModifier;
                 mWindowTitleModifier.Truncate();
             }
-#else
-            docShellElement->GetAttribute(NS_LITERAL_STRING("titlemenuseparator"), mTitleSeparator);
 #endif
+            docShellElement->GetAttribute(NS_LITERAL_STRING("titlemenuseparator"), mTitleSeparator);
             }
          }
       else