diff --git a/src/main.cpp b/src/main.cpp
index 96068a489..04ab8e670 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1195,6 +1195,10 @@ bool ContextualCheckTransaction(int32_t slowflag,const CBlock *block, CBlockInde
         if (tx.fOverwintered && tx.nVersionGroupId != SAPLING_VERSION_GROUP_ID)
         {
             //return state.DoS(dosLevel, error("CheckTransaction(): invalid Sapling tx version"),REJECT_INVALID, "bad-sapling-tx-version-group-id");
+            {
+                string strHex = EncodeHexTx(tx);
+                fprintf(stderr,"invalid Sapling rawtx.%s\n",strHex.c_str());
+            }
             return state.DoS(isInitBlockDownload() ? 0 : dosLevel,
                              error("CheckTransaction(): invalid Sapling tx version"),
                              REJECT_INVALID, "bad-sapling-tx-version-group-id");