diff --git a/Makefile b/Makefile
index 1b679c45017df2cf4b5af8670c24cc69fa2c6847..33a61da1273a3c23ea517eb58b3747e81733823e 100644
--- a/Makefile
+++ b/Makefile
@@ -8,4 +8,4 @@ env:
 
 clean:
 	rm -rf env
-	make -C docs clean
+	rm -rf docs/build