diff --git a/repos/dde_linux/src/drivers/usb_hid/main.cc b/repos/dde_linux/src/drivers/usb_hid/main.cc
index 9b071d22dc..b205d08fd6 100644
--- a/repos/dde_linux/src/drivers/usb_hid/main.cc
+++ b/repos/dde_linux/src/drivers/usb_hid/main.cc
@@ -281,7 +281,7 @@ void Driver::input_callback(Input_event type, unsigned code,
 	case EVENT_TYPE_WHEEL:   submit(Wheel{rx, ry});           break;
 	case EVENT_TYPE_TOUCH:
 		{
-			Touch_id const id { (int)code };
+			Touch_id const id { code };
 
 			if (rx == -1 && ry == -1)
 				submit(Touch_release{id});
diff --git a/repos/os/include/input/event.h b/repos/os/include/input/event.h
index 55111d847c..e0b453543f 100644
--- a/repos/os/include/input/event.h
+++ b/repos/os/include/input/event.h
@@ -23,7 +23,7 @@ namespace Input {
 
 	typedef Genode::Codepoint Codepoint;
 
-	struct Touch_id { int value; };
+	struct Touch_id { unsigned value; };
 
 	/*
 	 * Event attributes
diff --git a/repos/os/src/drivers/touch/synaptics_dsx/main.cc b/repos/os/src/drivers/touch/synaptics_dsx/main.cc
index 4553e73ed1..1df0f820e2 100644
--- a/repos/os/src/drivers/touch/synaptics_dsx/main.cc
+++ b/repos/os/src/drivers/touch/synaptics_dsx/main.cc
@@ -77,7 +77,7 @@ struct Synaptics
 		_i2c.send(I2C_ADDR, _buf, 1);
 		_i2c.recv(I2C_ADDR, (uint8_t *)fingers, sizeof(fingers));
 
-		for (int i = 0; i < FINGERS; i++) {
+		for (unsigned i = 0; i < FINGERS; i++) {
 			Finger_data &current = fingers[i];
 
 			Input::Touch_id id { i };
diff --git a/repos/os/src/lib/genode_c_api/event.cc b/repos/os/src/lib/genode_c_api/event.cc
index ac21372685..2be248ef39 100644
--- a/repos/os/src/lib/genode_c_api/event.cc
+++ b/repos/os/src/lib/genode_c_api/event.cc
@@ -75,7 +75,7 @@ namespace {
 		static void _touch(struct genode_event_submit *myself,
 		                   struct genode_event_touch_args const *args)
 		{
-			Input::Touch_id id { (int)args->finger };
+			Input::Touch_id id { args->finger };
 
 			_with_batch(myself, [&] (Event::Session_client::Batch &batch) {
 				batch.submit(Input::Touch { id, (float)args->xpos, (float)args->ypos }); });
@@ -84,7 +84,7 @@ namespace {
 		static void _touch_release(struct genode_event_submit *myself,
 		                           unsigned finger)
 		{
-			Input::Touch_id id { (int)finger };
+			Input::Touch_id id { finger };
 
 			_with_batch(myself, [&] (Event::Session_client::Batch &batch) {
 				batch.submit(Input::Touch_release { id }); });