diff --git a/scripts/prd.gd b/scripts/prd.gd
index 151df547..468cc181 100644
--- a/scripts/prd.gd
+++ b/scripts/prd.gd
@@ -346,7 +346,7 @@ func on_data_capsrpb_received(unit0: capsrpb.CapsRpb):
     if unit0.json_dic['ts'] != 7:     return
     if not unit0.json_dic.has('msfs'): return
 
-    var msfs = unit.json_dic['msfs']
+    var msfs = unit0.json_dic['msfs']
     for fs in msfs:
         if fs is Dictionary:
             if not fs.has('nmfs'):