diff --git a/README.md b/README.md
index 46fa626..14fce7f 100644
--- a/README.md
+++ b/README.md
@@ -4,6 +4,8 @@ A Python implementation of ETSI TS 102 818 v3.1 Hybrid Radio SPI, including an X
 
 This can be used by broadcasters for producing or parsing Hybrid Radio SPI documents over IP and/or DAB, or for general service and programme information interfacing. 
 
+Please make sure you select the Python2 branch if you want to use on Python 2.
+
 # TODO
 
 * GI Files
diff --git a/src/spi/binary/__init__.py b/src/spi/binary/__init__.py
index 577e932..48acd79 100644
--- a/src/spi/binary/__init__.py
+++ b/src/spi/binary/__init__.py
@@ -92,7 +92,7 @@ def tobytes(self):
 
         # encode CData
         if self.cdata is not None: 
-	    print 'rendering cdata: %s' % self.cdata
+	    # print 'rendering cdata: %s' % self.cdata
             logger.debug('rendering cdata: %s', self.cdata)
             data += self.cdata.tobytes()
         
@@ -361,7 +361,8 @@ def __repr__(self):
 genre_map = dict(
     IntentionCS=1,
     FormatCS=2,
-    ContentCS=3, # what happened to 4?!
+    ContentCS=3,
+    IntendedAudienceCS=4,
     OriginationCS=5,
     ContentAlertCS=6,
     MediaTypeCS=7,
@@ -377,6 +378,7 @@ def encode_genre(genre):
     bits.setall(False)
     
     # b0-3: RFU(0)
+    bits += encode_number(0,4)
     # b4-7: CS
     cs = segments[4]
     if cs in genre_map.keys(): cs_val = genre_map[cs]