diff --git a/docs/Makefile b/docs/Makefile
index 893b889..bfc3101 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -41,7 +41,6 @@ clean:
 
 html:
 	$(SPHINXBUILD) -W -b html $(ALLSPHINXOPTS) $(BUILDDIR)/html
-	cp -R API $(BUILDDIR)/html
 	@echo
 	@echo "Build finished. The HTML pages are in $(BUILDDIR)/html."