diff --git a/doc/Makefile b/doc/Makefile
index a72297f1c2d..86ca2019382 100644
--- a/doc/Makefile
+++ b/doc/Makefile
@@ -60,6 +60,7 @@ clean:
 	@rm -rf html
 	@rm -rf xml
 	@rm -rf latex
+	@rm -rf reference/kconfig/*.rst
 
 htmldocs: doxy html