diff --git a/slp_message_handler.cpp b/slp_message_handler.cpp
index ea90a11..b159ef7 100644
--- a/slp_message_handler.cpp
+++ b/slp_message_handler.cpp
@@ -360,8 +360,12 @@
     buffer buff;
     buff = slp::handler::internal::prepareHeader(req);
 
-    std::copy_n(&err, slp::response::SIZE_ERROR,
-                buff.data() + slp::response::OFFSET_ERROR);
+    static_assert(sizeof(err) == 1, "Errors should be 1 byte.");
+
+    // Since this is network order, the err should go in the 2nd byte of the
+    // error field.  This is immediately after the langtag.
+    buff[slp::header::MIN_LEN + req.header.langtag.length() + 1] = err;
+
     return buff;
 }
 } // namespace handler