diff --git a/src/extensions/scratch3_boost/index.js b/src/extensions/scratch3_boost/index.js
index 5d203fa0f..c4a7c4e24 100644
--- a/src/extensions/scratch3_boost/index.js
+++ b/src/extensions/scratch3_boost/index.js
@@ -802,9 +802,9 @@ class Boost {
             filters: [{
                 services: [BoostBLE.service],
                 manufacturerData: {
-                    0: {
-                        dataPrefix: [0x97, 0x03, 0x00, 0x40],
-                        mask: [0xFF, 0xFF, 0, 0xFF]
+                    0x0397: {
+                        dataPrefix: [0x00, 0x40],
+                        mask: [0x00, 0xFF]
                     }
                 }
             }],