diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..69f2c1d
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2023 Erik Scholz
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/src/states/receive_start_sha1.cpp b/src/states/receive_start_sha1.cpp
index 41c3af1..63ad90e 100644
--- a/src/states/receive_start_sha1.cpp
+++ b/src/states/receive_start_sha1.cpp
@@ -132,7 +132,7 @@ bool ReceiveStartSHA1::onFT1ReceiveInitSHA1Info(uint32_t group_number, uint32_t
 
 	if (_transfer.has_value()) {
 		// TODO: log?
-		return false; // allready in progress
+		return false; // already in progress
 	}
 
 	_sha1_info_data.resize(file_size);
diff --git a/src/states/sha1.cpp b/src/states/sha1.cpp
index 2820eca..68330be 100644
--- a/src/states/sha1.cpp
+++ b/src/states/sha1.cpp
@@ -284,7 +284,7 @@ bool SHA1::onFT1ReceiveInitSHA1Chunk(uint32_t group_number, uint32_t peer_number
 	SHA1Digest incomming_hash(file_id, file_id_size);
 
 	if (haveChunk(incomming_hash)) {
-		std::cout << "SHA1 ignoring init for chunk we allready have " << incomming_hash << "\n";
+		std::cout << "SHA1 ignoring init for chunk we already have " << incomming_hash << "\n";
 		return false;
 	}
 
@@ -300,7 +300,7 @@ bool SHA1::onFT1ReceiveInitSHA1Chunk(uint32_t group_number, uint32_t peer_number
 	// check transfers
 	for (const auto& it : _transfers_receiving_chunk) {
 		if (std::get<4>(it) == chunk_index) {
-			// allready in transition
+			// already in transition
 			return false;
 		}
 	}
@@ -389,14 +389,14 @@ void SHA1::onFT1SendDataSHA1Chunk(uint32_t group_number, uint32_t peer_number, u
 void SHA1::queueUpRequestInfo(uint32_t group_number, uint32_t peer_number) {
 	// check ongoing transfers for dup
 	for (const auto& it : _transfers_requested_info) {
-		// if allready in queue
+		// if already in queue
 		if (std::get<0>(it) == group_number && std::get<1>(it) == peer_number) {
 			return;
 		}
 	}
 
 	for (auto& [i_g, i_p] : _queue_requested_info) {
-		// if allready in queue
+		// if already in queue
 		if (i_g == group_number && i_p == peer_number) {
 			return;
 		}
@@ -410,7 +410,7 @@ void SHA1::queueUpRequestChunk(uint32_t group_number, uint32_t peer_number, cons
 	// TODO: transfers
 
 	for (auto& [i_g, i_p, i_h] : _queue_requested_chunk) {
-		// if allready in queue
+		// if already in queue
 		if (i_g == group_number && i_p == peer_number && i_h == hash) {
 			return;
 		}
diff --git a/src/tox_client.cpp b/src/tox_client.cpp
index 8387b57..ac3720c 100644
--- a/src/tox_client.cpp
+++ b/src/tox_client.cpp
@@ -253,7 +253,7 @@ void ToxClient::onToxGroupPeerExit(uint32_t group_number, uint32_t peer_id, Tox_
 void ToxClient::onToxGroupSelfJoin(uint32_t group_number) {
 	std::cout << "TCL group self join " << group_number << "\n";
 	// ???
-	// can be triggered after other peers allready joined o.o
+	// can be triggered after other peers already joined o.o
 	_tox_profile_dirty = true;
 }