diff --git a/src/simplewallet/simplewallet.cpp b/src/simplewallet/simplewallet.cpp
index 3cbfb760b..d7797f3cb 100644
--- a/src/simplewallet/simplewallet.cpp
+++ b/src/simplewallet/simplewallet.cpp
@@ -116,7 +116,7 @@ typedef cryptonote::simple_wallet sw;
 #define LONG_PAYMENT_ID_SUPPORT_CHECK() \
   do { \
     if (!m_long_payment_id_support) { \
-      fail_msg_writer() << tr("Long payment IDs are obsolete. Use --long-payment-id-support if you really must use one."); \
+      fail_msg_writer() << tr("Long payment IDs are obsolete. Use --long-payment-id-support if you really must use one, and warn the recipient they are using an obsolete feature that will disappear in the future."); \
       return true; \
     } \
   } while(0)