diff --git a/spec/getdns-0.508.tgz b/spec/getdns-0.508.tgz
deleted file mode 100644
index c61fea18..00000000
Binary files a/spec/getdns-0.508.tgz and /dev/null differ
diff --git a/spec/getdns-0.509.tgz b/spec/getdns-0.509.tgz
new file mode 100644
index 00000000..b8297635
Binary files /dev/null and b/spec/getdns-0.509.tgz differ
diff --git a/spec/index.html b/spec/index.html
index ea4b82f4..c42ccd3c 100644
--- a/spec/index.html
+++ b/spec/index.html
@@ -2324,8 +2324,9 @@ getdns_context_set_edns_maximum_udp_payload_size(
   getdns_context  *context,
   uint16_t        value
 );</div>
-<p class=cont>The value is between 512 and 65535; the default
-is <span class=default>512</span>.</p>
+<p class=cont>The value is between 512 and 65535; when not set, outgoing values will
+adhere to the suggestions in RFC 6891 and may follow a scheme that uses multiple values
+to maximize receptivity.</p>
 
 <div class=forh>
 getdns_return_t
@@ -2450,7 +2451,7 @@ getdns_pretty_print_dict() for debugging.</li>
 
 <h1>9. The Generated Files</h1>
 
-<p>There is <a href="getdns-0.508.tgz">a tarball</a> that includes the .h files,
+<p>There is <a href="getdns-0.509.tgz">a tarball</a> that includes the .h files,
 the examples, and so on. The examples all make, even though there is no API implementation, based
 on a pseudo-implementation in the tarball; see make-examples-PLATFORM.sh. Note that this currently builds fine
 on the Macintosh and Ubuntu; help is definitely appreciated on making the build process
diff --git a/src/context.c b/src/context.c
index 35def7c5..606dd3fa 100755
--- a/src/context.c
+++ b/src/context.c
@@ -1095,8 +1095,8 @@ getdns_context_set_upstream_recursive_servers(struct getdns_context *context,
 static void
 set_ub_edns_maximum_udp_payload_size(struct getdns_context* context,
     uint16_t value) {
-    /* max-udp-size */
-    set_ub_number_opt(context, "max-udp-size:", value);
+    /* edns-buffer-size */
+    set_ub_number_opt(context, "edns-buffer-size:", value);
 }
 
 static void