diff --git a/doc/bugs/Mercurial_example_diffurl_should_read_r2__44___not_changeset.mdwn b/doc/bugs/Mercurial_example_diffurl_should_read_r2__44___not_changeset.mdwn
index 14130e3bf..df51495d4 100644
--- a/doc/bugs/Mercurial_example_diffurl_should_read_r2__44___not_changeset.mdwn
+++ b/doc/bugs/Mercurial_example_diffurl_should_read_r2__44___not_changeset.mdwn
@@ -1,9 +1,9 @@
 In the example ikiwiki.setup:
 
-    diffurl => "http://localhost:8000/?fd=[[changeset]];file=[[file]]",
+    diffurl => "http://localhost:8000/?fd=\[[changeset]];file=\[[file]]",
     
 should be:
 
-    diffurl => "http://localhost:8000/?fd=[[r2]];file=[[file]]",
+    diffurl => "http://localhost:8000/?fd=\[[r2]];file=\[[file]]",
 
 (changeset doesn't get expanded; r2 does, to what appears to be The Right Thing)
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