diff --git a/mozilla/mailnews/compose/src/nsMsgCompose.cpp b/mozilla/mailnews/compose/src/nsMsgCompose.cpp
index 7d34be6adaa..6d3fed4ec1c 100644
--- a/mozilla/mailnews/compose/src/nsMsgCompose.cpp
+++ b/mozilla/mailnews/compose/src/nsMsgCompose.cpp
@@ -1385,7 +1385,7 @@ nsresult nsMsgCompose::CreateMessage(const char * originalMsgURI,
             m_compFields->AddAttachment(attachment);
           }
         
-          decodedSubject.Insert(NS_LITERAL_STRING("Fwd: ").get(), 0);
+          decodedSubject.Insert(NS_LITERAL_STRING("[Fwd: ").get(), 0);
           decodedSubject.Append(NS_LITERAL_STRING("]").get());
 
           m_compFields->SetSubject(decodedSubject.get());