diff --git a/docs/Makefile b/docs/Makefile
index 0bb739d50ba..701157ee6c3 100644
--- a/docs/Makefile
+++ b/docs/Makefile
@@ -47,7 +47,7 @@ help:
 .PHONY: clean
 clean: clean-examples
 	rm -rf $(BUILDDIR)/*
-	rm -rf source/cell source/cmd util/__pycache__
+	rm -rf source/cmd util/__pycache__
 	rm -rf source/generated
 	$(MAKE) -C source/_images clean