diff --git a/ch03.asciidoc b/ch03.asciidoc
index a36c5b4c..c3875298 100644
--- a/ch03.asciidoc
+++ b/ch03.asciidoc
@@ -635,9 +635,9 @@ To decode this hex string, use the +decoderawtransaction+ command. Copy and past
 ----
 $ bitcoin-cli decoderawtransaction 0100000001d717...388ac00000000
 ----
-[source,json]
+
 ++++
-<programlisting>
+<programlisting language="json">
 {
     "txid" : "9ca8f969bd3ef5ec2a8685660fdbf7a8bd365524c2e1fc66c309acbae2c14ae3",
     "version" : 1,