diff --git a/src/ripple/protocol/impl/TxFormats.cpp b/src/ripple/protocol/impl/TxFormats.cpp
index ff6157f32..4aceb6494 100644
--- a/src/ripple/protocol/impl/TxFormats.cpp
+++ b/src/ripple/protocol/impl/TxFormats.cpp
@@ -66,10 +66,12 @@ TxFormats::TxFormats ()
         ;
 
     add ("EnableAmendment", ttAMENDMENT)
+        << SOElement (sfLedgerSequence,      SOE_OPTIONAL)
         << SOElement (sfAmendment,           SOE_REQUIRED)
         ;
 
     add ("SetFee", ttFEE)
+        << SOElement (sfLedgerSequence,      SOE_OPTIONAL)
         << SOElement (sfBaseFee,             SOE_REQUIRED)
         << SOElement (sfReferenceFeeUnits,   SOE_REQUIRED)
         << SOElement (sfReserveBase,         SOE_REQUIRED)