Index: boost/asio/windows/basic_random_access_handle.hpp
===================================================================
--- boost/asio/windows/basic_random_access_handle.hpp	(revision 81672)
+++ boost/asio/windows/basic_random_access_handle.hpp	(working copy)
@@ -58,7 +58,7 @@
   /// Construct a basic_random_access_handle without opening it.
   /**
    * This constructor creates a random-access handle without opening it. The
-   * handle needs to be opened before data can be written to or or read from it.
+   * handle needs to be opened before data can be written to or read from it.
    *
    * @param io_service The io_service object that the random-access handle will
    * use to dispatch handlers for any asynchronous operations performed on the
Index: boost/asio/detail/win_iocp_socket_service_base.hpp
===================================================================
--- boost/asio/detail/win_iocp_socket_service_base.hpp	(revision 81672)
+++ boost/asio/detail/win_iocp_socket_service_base.hpp	(working copy)
@@ -446,7 +446,7 @@
       bool peer_is_open, socket_holder& new_socket, int family, int type,
       int protocol, void* output_buffer, DWORD address_length, operation* op);
 
-  // Start an asynchronous read or write operation using the the reactor.
+  // Start an asynchronous read or write operation using the reactor.
   BOOST_ASIO_DECL void start_reactor_op(base_implementation_type& impl,
       int op_type, reactor_op* op);
 
Index: boost/asio/ssl/detail/stream_core.hpp
===================================================================
--- boost/asio/ssl/detail/stream_core.hpp	(revision 81672)
+++ boost/asio/ssl/detail/stream_core.hpp	(working copy)
@@ -34,7 +34,7 @@
 
 struct stream_core
 {
-  // According to the OpenSSL documentation, this is the buffer size that is is
+  // According to the OpenSSL documentation, this is the buffer size that is
   // sufficient to hold the largest possible TLS record.
   enum { max_tls_record_size = 17 * 1024 };
 
Index: boost/asio/ssl/old/detail/openssl_operation.hpp
===================================================================
--- boost/asio/ssl/old/detail/openssl_operation.hpp	(revision 81672)
+++ boost/asio/ssl/old/detail/openssl_operation.hpp	(working copy)
@@ -154,7 +154,7 @@
                 // For connect/accept/shutdown, the operation
                 // is done, when return code is 1
                 // for write, it is done, when is retcode > 0
-                // for read, is is done when retcode > 0
+                // for read, it is done when retcode > 0
 
     int error_code =  !is_operation_done ?
           ::SSL_get_error( session_, rc ) :