diff --git a/exec/load/file_size.js b/exec/load/file_size.js
index 64f76fe7aa89b42168a1d3c3ba2a01682277539c..3f08725e51c2765453a2e13ec376333067c3ea36 100644
--- a/exec/load/file_size.js
+++ b/exec/load/file_size.js
@@ -78,5 +78,5 @@ function file_size_float(size, unit, precision)
 	else if(size >= one_kibibyte || unit == one_kibibyte)
 		return format("%1.*fK", precision, size/one_kibibyte);
 	else
-		return format("%luB", size);
+		return format("%lu", size);
 }