diff --git a/Makefile.am b/Makefile.am
index 01b958c..e64f397 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,2 +1,7 @@
 EXTRA_DIST = CHANGES LICENSE README.rst
 SUBDIRS = doc src test
+
+distcheck-hook:
+	sphinx-build -b html -W \
+		$(distdir)/doc \
+		$(distdir)/_build/doc/.build/html