diff --git a/Changelog.md b/Changelog.md
index 592e516..92dba48 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -16,6 +16,7 @@ npm install --save terrain50-cli
 
 ## v1.11 (unreleased)
  - `json`: Support `--tolerant`
+ - `json`: Fix crash when `--output` is specified
 
 
 ## v1.10 (6th December 2022)
diff --git a/src/Subcommands/json/index.mjs b/src/Subcommands/json/index.mjs
index 30d1307..5498067 100644
--- a/src/Subcommands/json/index.mjs
+++ b/src/Subcommands/json/index.mjs
@@ -22,7 +22,7 @@ async function process_filename(filepath, stream_out) {
 }
 
 export default async function(settings) {
-	const stream_out = process.stdout;
+	let stream_out = process.stdout;
 	if(settings.cli.output !== "-")
 		stream_out = fs.createWriteStream(settings.cli.output);