diff --git a/Documentation/Makefile b/Documentation/Makefile
index ed08936b7b..b4fe8df0ab 100644
--- a/Documentation/Makefile
+++ b/Documentation/Makefile
@@ -52,4 +52,4 @@ distclean: clean
 	rm -f corebootPortingGuide.pdf
 
 livesphinx:
-	$(MAKE) -f Makefile.sphinx livehtml
+	$(MAKE) -f Makefile.sphinx livehtml SPHINXOPTS="$(SPHINXOPTS)"