diff --git a/html/formatter.js b/html/formatter.js
index b220f50..0706359 100644
--- a/html/formatter.js
+++ b/html/formatter.js
@@ -571,9 +571,9 @@ function wqi(data) {
         } else if (type4 == 'tisb') {
             ac.version = ac.tisb_version;
         }
-        if (stride == 116) {
+        if (stride == 112) {
             let part2 = u32[27].toString(16).padStart(8, '0');
-            ac.rId = u32[28].toString(16).padStart(8, '0') + '-' + part2.slice(0, 4) + '-' + part2.slice(4);
+            ac.rId = part2.slice(0, 4) + '-' + part2.slice(4);
         }
 
         data.aircraft.push(ac);