diff --git a/fileinfo.ts b/fileinfo.ts
index b0477d8..acd6ce5 100644
--- a/fileinfo.ts
+++ b/fileinfo.ts
@@ -25,6 +25,8 @@ const file =
 function formatSize(size: number): string {
   return formatBytes(size, {
     binary: true,
+    minimumFractionDigits: 1,
+    maximumFractionDigits: 1,
   })
     .replace(" ", "")
     .replace("i", "");