diff --git a/user_bound_nlmessage.cc b/user_bound_nlmessage.cc
index 7121512..62eb59c 100644
--- a/user_bound_nlmessage.cc
+++ b/user_bound_nlmessage.cc
@@ -1977,7 +1977,7 @@
                << "k" << message.GetMessageTypeString()
                << "[] = {";
 
-    int payload_bytes = nlmsg_len(msg);
+    int payload_bytes = nlmsg_datalen(msg);
 
     size_t bytes = nlmsg_total_size(payload_bytes);
     unsigned char *rawdata = reinterpret_cast<unsigned char *>(msg);