--- a/mailnews/base/src/nsMsgPrintEngine.cpp
+++ b/mailnews/base/src/nsMsgPrintEngine.cpp
@@ -374,17 +374,17 @@ nsMsgPrintEngine::ShowProgressDialog(boo
         {
           nsString msg;
           if (mIsDoingPrintPreview) {
             GetString(u"LoadingMailMsgForPrintPreview", msg);
           } else {
             GetString(u"LoadingMailMsgForPrint", msg);
           }
           if (!msg.IsEmpty())
-            mPrintProgressParams->SetDocTitle(msg.get());
+            mPrintProgressParams->SetDocTitle(msg);
         }
       }
     }
   }
   return rv;
 }