diff --git a/src/meshcore/reader.py b/src/meshcore/reader.py
index 088baeb..4e47e77 100644
--- a/src/meshcore/reader.py
+++ b/src/meshcore/reader.py
@@ -555,7 +555,7 @@ class MessageReader:
                 dbuf.read(1)
 
                 if len(data) > 7:
-                    res["pubkey_prefix"] = pbuf.read(6).hex()
+                    res["pubkey_prefix"] = dbuf.read(6).hex()
 
                     attributes = {"pubkey_prefix": res.get("pubkey_prefix")}