diff --git a/doc/tcp.html b/doc/tcp.html
index ecbedaa..0be535a 100644
--- a/doc/tcp.html
+++ b/doc/tcp.html
@@ -302,7 +302,7 @@ server:<b>setoption(</b>option [, value]<b>)</b>
 
 <p class=description>
 Sets options for the TCP object. Options are only needed by low-level or
-time-critical applications. You should only modify a an option if you 
+time-critical applications. You should only modify an option if you 
 are sure you need it. 
 </p>
 
@@ -314,7 +314,7 @@ depends on the option being set:
 <li> '<tt>tcp-nodelay</tt>': Setting this option to <tt>true</tt> disables the
 Nagle's algorithm for the connection;
 <li> '<tt>linger</tt>': Controls the action taken when unsent data are
-queued on socket and a close is performed.  The value is a table with a
+queued on a socket and a close is performed.  The value is a table with a
 boolean entry '<tt>on</tt>' and a numeric entry for the time interval
 '<tt>timeout</tt>' in seconds.
  If the '<tt>on</tt>' field is set to <tt>true</tt>,
diff --git a/doc/udp.html b/doc/udp.html
index 235c0c5..7f2ecce 100644
--- a/doc/udp.html
+++ b/doc/udp.html
@@ -312,7 +312,7 @@ unconnected:<b>setoption(</b>option [, value]<b>)</b>
 <p class="description">
 Sets options for the UDP object. Options are
 only needed by low-level or time-critical applications. You should
-only modify a an option if you are sure you need it.</p>
+only modify an option if you are sure you need it.</p>
 <p class="parameters"><tt>Option</tt> is a string with the option
 name, and <tt>value</tt> depends on the option being set:
 </p>