diff --git a/tools/README.md b/tools/README.md
index c401ed873f..8f24f19ab0 100644
--- a/tools/README.md
+++ b/tools/README.md
@@ -8,19 +8,26 @@ xpubaddrgen
 
 xpubaddrgen reads job specification from stdin in format:
 
+```
 <jobid> <xpub> <change> <from> <to>
+```
 
 and prints the results to stdout in format:
 
+```
 <jobid> <index> <address>
+```
 
 Example input:
 
+```
 23 xpub6BcjTvRCYD4VvFQ8whztSXhbNyhS56eTd5P3g9Zvd3zPEeUeL5CUqBYX8NSd1b6Thitr8bZcSnesmXZH7KerMcc4tUkenBShYCtQ1L8ebVe 0 0 5
 42 xpub6AT2YrLinU4Be5UWUxMaUz3zTA99CSGvXt1jt2Lgym8PqXbTzmpQ8MHjoLnx8YJiMMUP5iEfR97YQVmgF6B2tAhbCZrXqn65ur526NkZ6ey 1 1000 1005
+```
 
 Example output:
 
+```
 23 0 14vb5Cws75p2i5rmSiF5CKMyezUX4hxSb9
 23 1 1Lf4ciA36dsi1niF6smVcpCiHcpj2skaPq
 23 2 1LraByp7gQAipvHnFS1gTSzixBtYaVyQGp
@@ -31,6 +38,8 @@ Example output:
 42 1002 1Jhv33bJy229ThM7HKxUa92cMK5gi7DyPC
 42 1003 13LxbTjQPByisj4F4sZEivUBdnJwigzg6R
 42 1004 1BWBpSWkPwcKxVr2WDyUqQbmvk5SGihcx9
+```
 
-It will print "<jobid> error" when there was an error processing job <jobid>.
-It will print "error" when it encountered a malformed line.
+It will print ```<jobid> error``` when there was an error processing job jobid.
+
+It will print ```error``` when it encountered a malformed line.