diff --git a/Makefile b/Makefile
index dffad24..348713a 100644
--- a/Makefile
+++ b/Makefile
@@ -10,6 +10,7 @@ fetch: subscriptions.curl
 	curl --location --output-dir html --create-dirs --rate 1/s --config subscriptions.curl
 
 channel-json: subscriptions.txt
+	mkdir -p json
 	# nproc is not portable :-/
 	xargs -n1 --max-procs=$$(nproc) --arg-file subscriptions.txt --verbose ./generate-json-opml