diff --git a/test/boostbook.py b/test/boostbook.py
index 3b134d8c7..5e07f1e09 100644
--- a/test/boostbook.py
+++ b/test/boostbook.py
@@ -12,11 +12,11 @@ t = Tester()
 
 t.set_tree("boostbook")
 # For some reason, the messages are sent to stderr.
-t.run_build_system(stderr="""Writing A.html for refentry(A)
+t.run_build_system(stderr="""Writing boost/A.html for refentry(boost.A)
 Writing library/reference.html for section(library.reference)
 Writing index.html for chapter(library)
 Writing HTML.manifest
 """)
-t.expect_addition(["html/A.html", "html/index.html"])
+t.expect_addition(["html/boost/A.html", "html/index.html"])
 
 t.cleanup()