diff --git a/repos/gems/src/server/ssh_terminal/login.h b/repos/gems/src/server/ssh_terminal/login.h
index 4f4fc5781..c4b946df9 100644
--- a/repos/gems/src/server/ssh_terminal/login.h
+++ b/repos/gems/src/server/ssh_terminal/login.h
@@ -109,7 +109,7 @@ struct Ssh::Login : Genode::Registry<Ssh::Login>::Element
 struct Ssh::Login_registry : Genode::Registry<Ssh::Login>
 {
 	Genode::Allocator &_alloc;
-	Genode::Lock       _lock { };
+	Genode::Mutex      _mutex { };
 
 	/**
 	 * Import one login from node
@@ -153,9 +153,9 @@ struct Ssh::Login_registry : Genode::Registry<Ssh::Login>
 	Login_registry(Genode::Allocator &alloc) : _alloc(alloc) { }
 
 	/**
-	 * Return registry lock
+	 * Return registry mutex 
 	 */
-	Genode::Lock &lock() { return _lock; }
+	Genode::Mutex &mutex() { return _mutex; }
 
 	/**
 	 * Import all login information from config
diff --git a/repos/gems/src/server/ssh_terminal/root_component.h b/repos/gems/src/server/ssh_terminal/root_component.h
index 70c039b02..fce00e5ce 100644
--- a/repos/gems/src/server/ssh_terminal/root_component.h
+++ b/repos/gems/src/server/ssh_terminal/root_component.h
@@ -56,7 +56,7 @@ class Terminal::Root_component : public Genode::Root_component<Session_component
 			if (!_config_rom.valid()) { return; }
 
 			{
-				Genode::Lock::Guard g(_logins.lock());
+				Genode::Mutex::Guard guard(_logins.mutex());
 				_logins.import(_config_rom.xml());
 			}
 
diff --git a/repos/gems/src/server/ssh_terminal/server.cc b/repos/gems/src/server/ssh_terminal/server.cc
index 4b8976ec8..70f30d380 100644
--- a/repos/gems/src/server/ssh_terminal/server.cc
+++ b/repos/gems/src/server/ssh_terminal/server.cc
@@ -234,7 +234,7 @@ void Ssh::Server::_parse_config(Genode::Xml_node const &config)
 	_log_level  = config.attribute_value("debug",      0u);
 	_log_logins = config.attribute_value("log_logins", true);
 
-	Genode::Lock::Guard g(_logins.lock());
+	Genode::Mutex::Guard guard(_logins.mutex());
 	auto print = [&] (Login const &login) {
 		Genode::log("Login configured: ", login);
 	};
@@ -330,7 +330,7 @@ void Ssh::Server::_log_login(User const &user, Session const &s, bool pubkey)
 
 void Ssh::Server::attach_terminal(Ssh::Terminal &conn)
 {
-	Genode::Lock::Guard g(_terminals.lock());
+	Genode::Mutex::Guard guard(_terminals.mutex());
 
 	try {
 		new (&_heap) Terminal_session(_terminals,
@@ -358,7 +358,7 @@ void Ssh::Server::attach_terminal(Ssh::Terminal &conn)
 
 void Ssh::Server::detach_terminal(Ssh::Terminal &conn)
 {
-	Genode::Lock::Guard g(_terminals.lock());
+	Genode::Mutex::Guard guard(_terminals.mutex());
 
 	Terminal_session *p = nullptr;
 	auto lookup = [&] (Terminal_session &t) {
@@ -390,7 +390,7 @@ void Ssh::Server::detach_terminal(Ssh::Terminal &conn)
 
 void Ssh::Server::update_config(Genode::Xml_node const &config)
 {
-	Genode::Lock::Guard g(_terminals.lock());
+	Genode::Mutex::Guard guard(_terminals.mutex());
 
 	_parse_config(config);
 	ssh_bind_options_set(_ssh_bind, SSH_BIND_OPTIONS_LOG_VERBOSITY, &_log_level);
@@ -422,7 +422,7 @@ Ssh::Session *Ssh::Server::lookup_session(ssh_session s)
 bool Ssh::Server::request_terminal(Session &session,
                                    const char* command)
 {
-	Genode::Lock::Guard g(_logins.lock());
+	Genode::Mutex::Guard guard(_logins.mutex());
 	Login const *l = _logins.lookup(session.user().string());
 	if (!l || !l->request_terminal) {
 		return false;
@@ -502,7 +502,7 @@ bool Ssh::Server::auth_password(ssh_session s, char const *u, char const *pass)
 	 * Even if there is no valid login for the user, let
 	 * the client try anyway and check multi login afterwards.
 	 */
-	Genode::Lock::Guard g(_logins.lock());
+	Genode::Mutex::Guard guard(_logins.mutex());
 	Login const *l = _logins.lookup(u);
 	if (l && l->user == u && l->password == pass) {
 		if (_allow_multi_login(s, *l)) {
@@ -563,7 +563,7 @@ bool Ssh::Server::auth_pubkey(ssh_session s, char const *u,
 	 * matches allow authentication to proceed.
 	 */
 	if (signature_state == SSH_PUBLICKEY_STATE_VALID) {
-		Genode::Lock::Guard g(_logins.lock());
+		Genode::Mutex::Guard guard(_logins.mutex());
 		Login const *l = _logins.lookup(u);
 		if (l && !ssh_key_cmp(pubkey, l->pub_key,
 		                      SSH_KEY_CMP_PUBLIC)) {
@@ -591,7 +591,7 @@ void Ssh::Server::loop()
 		}
 
 		{
-			Genode::Lock::Guard g(_terminals.lock());
+			Genode::Mutex::Guard guard(_terminals.mutex());
 
 			/* first remove all stale sessions */
 			auto cleanup = [&] (Session &s) {
diff --git a/repos/gems/src/server/ssh_terminal/server.h b/repos/gems/src/server/ssh_terminal/server.h
index ee790c77b..1d7f1bae0 100644
--- a/repos/gems/src/server/ssh_terminal/server.h
+++ b/repos/gems/src/server/ssh_terminal/server.h
@@ -60,10 +60,10 @@ struct Ssh::Session : Genode::Registry<Session>::Element
 
 	Ssh::Terminal *terminal          { nullptr };
 
-	Genode::Lock _access_lock { };
-	Genode::Lock &lock_terminal()
+	Genode::Mutex  _access_mutex { };
+	Genode::Mutex &mutex_terminal()
 	{
-		return _access_lock;
+		return _access_mutex;
 	}
 
 	bool spawn_terminal { false };
@@ -110,8 +110,8 @@ struct Ssh::Terminal_session : Genode::Registry<Terminal_session>::Element
 
 struct Ssh::Terminal_registry : Genode::Registry<Terminal_session>
 {
-	Genode::Lock _lock { };
-	Genode::Lock &lock() { return _lock; }
+	Genode::Mutex _mutex { };
+	Genode::Mutex &mutex() { return _mutex; }
 };
 
 
diff --git a/repos/gems/src/server/ssh_terminal/ssh_callbacks.cc b/repos/gems/src/server/ssh_terminal/ssh_callbacks.cc
index ecff52bd3..3e5e2198b 100644
--- a/repos/gems/src/server/ssh_terminal/ssh_callbacks.cc
+++ b/repos/gems/src/server/ssh_terminal/ssh_callbacks.cc
@@ -36,7 +36,7 @@ int channel_data_cb(ssh_session session, ssh_channel channel,
                     void *userdata)
 {
 	using Genode::error;
-	using Genode::Lock;
+	using Genode::Mutex;
 
 	if (len == 0) {
 		return 0;
@@ -60,7 +60,7 @@ int channel_data_cb(ssh_session session, ssh_channel channel,
 	}
 
 	Ssh::Terminal &conn      { *p->terminal };
-	Lock::Guard    guard     { conn.read_buf.lock() };
+	Mutex::Guard   guard     { conn.read_buf.mutex() };
 	char const    *src       { reinterpret_cast<char const*>(data) };
 	size_t         num_bytes { 0 };
 
diff --git a/repos/gems/src/server/ssh_terminal/terminal.h b/repos/gems/src/server/ssh_terminal/terminal.h
index 34a231b0e..8d6ff22f9 100644
--- a/repos/gems/src/server/ssh_terminal/terminal.h
+++ b/repos/gems/src/server/ssh_terminal/terminal.h
@@ -159,7 +159,7 @@ class Ssh::Terminal
 		 */
 		void send(ssh_channel channel)
 		{
-			Lock::Guard g(_write_buf.lock());
+			Mutex::Guard guard(_write_buf.mutex());
 
 			if (!_write_buf.read_avail()) { return; }
 
@@ -192,7 +192,7 @@ class Ssh::Terminal
 		 */
 		size_t read(char *dst, size_t dst_len)
 		{
-			Genode::Lock::Guard g(read_buf.lock());
+			Mutex::Guard guard(read_buf.mutex());
 
 			size_t const num_bytes = min(dst_len, read_buf.read_avail());
 			Genode::memcpy(dst, read_buf.content(), num_bytes);
@@ -214,7 +214,7 @@ class Ssh::Terminal
 		 */
 		size_t write(char const *src, Genode::size_t src_len)
 		{
-			Lock::Guard g(_write_buf.lock());
+			Mutex::Guard g(_write_buf.mutex());
 
 			size_t num_bytes = 0;
 			size_t i = 0;
@@ -247,7 +247,7 @@ class Ssh::Terminal
 		 */
 		bool read_buffer_empty()
 		{
-			Genode::Lock::Guard g(read_buf.lock());
+			Mutex::Guard guard(read_buf.mutex());
 			return !read_buf.read_avail();
 		}
 };
diff --git a/repos/gems/src/server/ssh_terminal/util.h b/repos/gems/src/server/ssh_terminal/util.h
index 562fdd678..9d692a6c6 100644
--- a/repos/gems/src/server/ssh_terminal/util.h
+++ b/repos/gems/src/server/ssh_terminal/util.h
@@ -42,10 +42,10 @@ namespace Util
 template <size_t C>
 struct Util::Buffer
 {
-	Genode::Lock _lock    { };
-	char         _data[C] { };
-	size_t       _head    { 0 };
-	size_t       _tail    { 0 };
+	Genode::Mutex _mutex   { };
+	char          _data[C] { };
+	size_t        _head    { 0 };
+	size_t        _tail    { 0 };
 
 	size_t read_avail()   const { return _head > _tail ? _head - _tail : 0; }
 	size_t write_avail()  const { return _head <= C ? C - _head : 0; }
@@ -55,7 +55,7 @@ struct Util::Buffer
 	void consume(size_t n) { _tail += n; }
 	void reset()           { _head = _tail = 0; }
 
-	Genode::Lock &lock()   { return _lock; }
+	Genode::Mutex &mutex() { return _mutex; }
 };
 
 #endif /* _SSH_TERMINAL_UTIL_H_ */