diff --git a/inbox/s2s-over-s5066.xml b/inbox/s2s-over-s5066.xml
index 8ffae14d..2dc99ade 100644
--- a/inbox/s2s-over-s5066.xml
+++ b/inbox/s2s-over-s5066.xml
@@ -6,7 +6,7 @@
 <?xml-stylesheet type='text/xsl' href='xep.xsl'?>
 <xep>
 <header>
-  <title>Server to Server communication over STANAG 50666 ARQ</title>
+  <title>Server to Server communication over STANAG 5066 ARQ</title>
   <abstract>
   This specification defines operation over XMPP over the NATO STANAG 5066 data link service for point to point links (ARQ).   This enables optimized XMPP performance over HF Radio (which STANAG 5066 was designed for) and over other data links using STANAG 5066.