diff --git a/iguana/iguana_interpreter.c b/iguana/iguana_interpreter.c
index 5604bfcda..40372ca0d 100755
--- a/iguana/iguana_interpreter.c
+++ b/iguana/iguana_interpreter.c
@@ -1340,8 +1340,8 @@ int32_t bitcoin_assembler(struct iguana_info *coin,cJSON *logarray,uint8_t scrip
                     uint8_t rmd160[20],revdata[0x100]; bits256 hash;
                     if ( (datalen= iguana_databuf(databuf,args[0])) <= sizeof(revdata) )
                     {
-                        //for (i=0; i<datalen; i++)
-                        //    revdata[i] = databuf[i];
+                        for (i=0; i<datalen; i++)
+                            revdata[i] = databuf[datalen - 1 - i];
                     } else printf("datalen.%d too big for %d\n",datalen,(int32_t)sizeof(revdata));
                     switch ( op->opcode )
                     {