diff --git a/include/libtorrent/aux_/session_impl.hpp b/include/libtorrent/aux_/session_impl.hpp
index 39a25c1f2..336d4d676 100644
--- a/include/libtorrent/aux_/session_impl.hpp
+++ b/include/libtorrent/aux_/session_impl.hpp
@@ -850,9 +850,9 @@ namespace libtorrent
 			tcp::endpoint m_listen_interface;
 
 			// the network interfaces outgoing connections are opened through. If
-			// there is more then one, they are used in a round-robin fasion
+			// there is more then one, they are used in a round-robin fashion
 			// each element is a device name or IP address (in string form) and
-			// a port number. The port determins which port to bind the listen
+			// a port number. The port determines which port to bind the listen
 			// socket to, and the device or IP determines which network adapter
 			// to be used. If no adapter with the specified name exists, the listen
 			// socket fails.
diff --git a/include/libtorrent/extensions.hpp b/include/libtorrent/extensions.hpp
index 086695a8c..66b775e49 100644
--- a/include/libtorrent/extensions.hpp
+++ b/include/libtorrent/extensions.hpp
@@ -237,9 +237,9 @@ namespace libtorrent
 		// called once per second
 		virtual void on_tick() {}
 
-		// called when choosing peers to optimisticly unchoke
+		// called when choosing peers to optimistically unchoke
 		// peer's will be unchoked in the order they appear in the given
-		// vector which is initiallity sorted by when they were last
+		// vector which is initially sorted by when they were last
 		// optimistically unchoked.
 		// if the plugin returns true then the ordering provided will be
 		// used and no other plugin will be allowed to change it.
diff --git a/include/libtorrent/extensions/metadata_transfer.hpp b/include/libtorrent/extensions/metadata_transfer.hpp
index 18090c84a..248c677b3 100644
--- a/include/libtorrent/extensions/metadata_transfer.hpp
+++ b/include/libtorrent/extensions/metadata_transfer.hpp
@@ -52,7 +52,7 @@ namespace libtorrent
 
 #ifndef TORRENT_NO_DEPRECATE
 	// constructor function for the metadata transfer extension. This
-	// extension has been superceded by the ut_metadata extension and
+	// extension has been superseded by the ut_metadata extension and
 	// is deprecated. It can be either be passed in the
 	// add_torrent_params::extensions field, or
 	// via torrent_handle::add_extension().
diff --git a/include/libtorrent/settings_pack.hpp b/include/libtorrent/settings_pack.hpp
index e10c779d2..59ea80f67 100644
--- a/include/libtorrent/settings_pack.hpp
+++ b/include/libtorrent/settings_pack.hpp
@@ -819,7 +819,7 @@ namespace libtorrent
 			// the job and either write it to disk or insert it in the write
 			// cache. When this limit is reached, the peer connections will stop
 			// reading data from their sockets, until the disk thread catches up.
-			// Setting this too low will severly limit your download rate.
+			// Setting this too low will severely limit your download rate.
 			max_queued_disk_bytes,
 
 			// the number of seconds to wait for a handshake response from a peer.
@@ -1119,7 +1119,7 @@ namespace libtorrent
 			// read cache when a read cache miss occurs. Setting this to 0 is
 			// essentially the same thing as disabling read cache. The number of
 			// blocks read into the read cache is always capped by the piece
-			// boundry.
+			// boundary.
 			// 
 			// When a piece in the write cache has ``write_cache_line_size``
 			// contiguous blocks in it, they will be flushed. Setting this to 1
@@ -1186,7 +1186,7 @@ namespace libtorrent
 			// reciprocation rate.
 			// 
 			// ``increase_est_reciprocation_rate`` specifies how many percent the
-			// extimated reciprocation rate should be increased by each unchoke
+			// estimated reciprocation rate should be increased by each unchoke
 			// interval a peer is still choking us back. This defaults to 20%.
 			// This only applies to the BitTyrant choker.
 			// 
@@ -1200,7 +1200,7 @@ namespace libtorrent
 
 			// the max number of peers we accept from pex messages from a single
 			// peer. this limits the number of concurrent peers any of our peers
-			// claims to be connected to. If they clain to be connected to more
+			// claims to be connected to. If they claim to be connected to more
 			// than this, we'll ignore any peer that exceeds this limit
 			max_pex_peers,
 
diff --git a/include/libtorrent/torrent_handle.hpp b/include/libtorrent/torrent_handle.hpp
index 5a1c6cd37..ab749cc43 100644
--- a/include/libtorrent/torrent_handle.hpp
+++ b/include/libtorrent/torrent_handle.hpp
@@ -889,7 +889,7 @@ namespace libtorrent
 			, std::string const& dh_params);
 
 		// Returns the storage implementation for this torrent. This depends on the
-		// storage contructor function that was passed to add_torrent.
+		// storage constructor function that was passed to add_torrent.
 		storage_interface* get_storage_impl() const;
 
 		// Returns a pointer to the torrent_info object associated with this