diff --git a/utility/create-sha-file.mjs b/utility/create-sha-file.mjs
index dfea3d1bc..d3590e779 100644
--- a/utility/create-sha-file.mjs
+++ b/utility/create-sha-file.mjs
@@ -21,7 +21,7 @@ function hashFile(path) {
 	});
 }
 export default (async function (out, archiveFiles) {
-	const filesToAnalyze = Array.from(new Set(archiveFiles.map(f => f.full))).sort;
+	const filesToAnalyze = Array.from(new Set(archiveFiles.map(f => f.full))).sort();
 	let s = "";
 	for (const file of filesToAnalyze) {
 		s += `${file.base}\t${await hashFile(file)}\n`;