diff --git a/Doc/Manual/Perl5.html b/Doc/Manual/Perl5.html
index d1b5d6746..c130cdef4 100644
--- a/Doc/Manual/Perl5.html
+++ b/Doc/Manual/Perl5.html
@@ -1493,7 +1493,7 @@ as well as a special error code:
 <div class="code">
 <pre>
 /* send message, return number of bytes sent, along with success code */
-int send_message(char *text, int len, int *success);
+int send_message(char *text, int *success);
 </pre>
 </div>
 
diff --git a/Doc/Manual/Python.html b/Doc/Manual/Python.html
index e58c63715..937672c2a 100644
--- a/Doc/Manual/Python.html
+++ b/Doc/Manual/Python.html
@@ -4175,7 +4175,7 @@ as well as a special error code:
 <div class="code">
 <pre>
 /* send message, return number of bytes sent, along with success code */
-int send_message(char *text, int len, int *success);
+int send_message(char *text, int *success);
 </pre>
 </div>
 
diff --git a/Doc/Manual/Tcl.html b/Doc/Manual/Tcl.html
index 50f736d93..bab5a8c1c 100644
--- a/Doc/Manual/Tcl.html
+++ b/Doc/Manual/Tcl.html
@@ -2243,7 +2243,7 @@ as well as a special error code:
 <div class="code">
 <pre>
 /* send message, return number of bytes sent, along with success code */
-int send_message(char *text, int len, int *success);
+int send_message(char *text, int *success);
 </pre>
 </div>