diff --git a/doc/master/valid_exec b/doc/master/valid_exec
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+SYNOPSIS
+	int valid_exec(string name, object ob, object obfrom)
+
+DESCRIPTION
+	Validate the rebinding of an IP connection by usage of efun
+	exec(). Arguments are the <name> of the _program_ attempting
+	to rebind the connection, the object <ob> to receive the
+	connection, and the object <obfrom> giving the connection.
+	Note that the program name is not the object_name() of the
+	object, and has no leading slash.
+
+	Return 0 to disallow the action, any other value to allow it.
+
+SEE ALSO
+	exec(E)