diff --git a/docshell/base/nsDocShell.cpp b/docshell/base/nsDocShell.cpp
index e4d2e03ff98d..afe2d9963072 100644
--- a/docshell/base/nsDocShell.cpp
+++ b/docshell/base/nsDocShell.cpp
@@ -109,6 +109,8 @@
 
 #include "prlog.h"
 
+#include "nsISelectionDisplay.h"
+
 // this is going away - see
 //
 #include "nsIBrowserHistory.h"
@@ -382,6 +384,12 @@ NS_IMETHODIMP nsDocShell::GetInterface(const nsIID & aIID, void **aSink)
 
       return NS_NOINTERFACE;   
     }
+    else if (aIID.Equals(NS_GET_IID(nsISelectionDisplay))) {
+      nsCOMPtr<nsIPresShell> shell;
+      nsresult rv = GetPresShell(getter_AddRefs(shell));
+      if (NS_SUCCEEDED(rv) && shell)
+        return shell->QueryInterface(aIID,aSink);    
+    }
     else {
         return QueryInterface(aIID, aSink);
     }