diff --git a/doc/protocol.html b/doc/protocol.html
index 434e3c1..7093764 100644
--- a/doc/protocol.html
+++ b/doc/protocol.html
@@ -261,7 +261,7 @@ number in the range of <code>-128</code> to <code>255</code>,
 or <code>-0200</code> to <code>0377</code>, respectively. 
 </p>
 <p>
-<em>StreamDevice</em> also recordgnizes the ASCII symbolic names
+<em>StreamDevice</em> also recognizes the ASCII symbolic names
 (not case sensitive) for several byte codes:<br>
 <code>NUL </code>(= <code>0x00</code>) <em>null</em><br>
 <code>SOH </code>(= <code>0x01</code>) <em>start of heading</em><br>