diff --git a/bin/send_udp_packet_v4.py b/bin/send_udp_packet_v4.py
index 5e51d9e..04a3d2f 100644
--- a/bin/send_udp_packet_v4.py
+++ b/bin/send_udp_packet_v4.py
@@ -14,7 +14,7 @@ if __name__ == '__main__':
 
     pkg = e / i / u / d
 
-    packet_rebuild = packet.__class__(str(pkg))
+    packet_rebuild = pkg.__class__(str(pkg))
     print("pkg = {}".format(pkg.__repr__()))
     print("checksum = {}".format(packet_rebuild[UDP].chksum))