diff --git a/lib/logitech_receiver/receiver.py b/lib/logitech_receiver/receiver.py
index ade67292..758327fc 100644
--- a/lib/logitech_receiver/receiver.py
+++ b/lib/logitech_receiver/receiver.py
@@ -26,6 +26,7 @@ from .device import Device
 
 logger = logging.getLogger(__name__)
 
+_hidpp10 = hidpp10.Hidpp10()
 _R = hidpp10_constants.REGISTERS
 _IR = hidpp10_constants.INFO_SUBREGISTERS
 
@@ -98,7 +99,7 @@ class Receiver:
     @property
     def firmware(self):
         if self._firmware is None and self.handle:
-            self._firmware = hidpp10.get_firmware(self)
+            self._firmware = _hidpp10.get_firmware(self)
         return self._firmware
 
     # how many pairings remain (None for unknown, -1 for unlimited)
@@ -124,12 +125,12 @@ class Receiver:
             )
         else:
             set_flag_bits = 0
-        ok = hidpp10.set_notification_flags(self, set_flag_bits)
+        ok = _hidpp10.set_notification_flags(self, set_flag_bits)
         if ok is None:
             logger.warning("%s: failed to %s receiver notifications", self, "enable" if enable else "disable")
             return None
 
-        flag_bits = hidpp10.get_notification_flags(self)
+        flag_bits = _hidpp10.get_notification_flags(self)
         flag_names = None if flag_bits is None else tuple(hidpp10_constants.NOTIFICATION_FLAG.flag_names(flag_bits))
         if logger.isEnabledFor(logging.INFO):
             logger.info("%s: receiver notifications %s => %s", self, "enabled" if enable else "disabled", flag_names)
diff --git a/setup.py b/setup.py
index 9b40ddce..80e26e8b 100755
--- a/setup.py
+++ b/setup.py
@@ -86,7 +86,7 @@ For instructions on installing Solaar see https://pwr-solaar.github.io/Solaar/in
         "report-descriptor": ["hid-parser"],
         "desktop-notifications": ["Notify (>= 0.7)"],
         "git-commit": ["python-git-info"],
-        "test": ["pytest", "pytest-cov"],
+        "test": ["pytest", "pytest-mock", "pytest-cov"],
         "dev": ["ruff"],
     },
     package_dir={"": "lib"},
diff --git a/tests/logitech_receiver/test_hidpp10.py b/tests/logitech_receiver/test_hidpp10.py
new file mode 100644
index 00000000..955c2070
--- /dev/null
+++ b/tests/logitech_receiver/test_hidpp10.py
@@ -0,0 +1,42 @@
+import pytest
+
+from logitech_receiver import hidpp10, hidpp10_constants
+
+
+class FakeDevice:
+    kind = "fake"
+    online = True
+    registers = [hidpp10_constants.REGISTERS.three_leds]
+
+    def request(self, *params):
+        return b"fake request"
+
+    def read_register(self, register_number, *params):
+        return "fake register"
+
+
+@pytest.fixture
+def setup_hidpp10():
+    device = FakeDevice()
+    hid = hidpp10.Hidpp10()
+
+    yield device, hid
+
+
+def test_hidpp10(setup_hidpp10):
+    device, hid = setup_hidpp10
+
+    firmwares = hid.get_firmware(device)
+
+    assert len(firmwares) == 3
+    for firmware in firmwares:
+        assert firmware.kind in ["Firmware", "Bootloader", "Other"]
+
+
+def test_set_3leds(setup_hidpp10, mocker):
+    device, hid = setup_hidpp10
+    spy_write_register = mocker.spy(hidpp10, "write_register")
+
+    hid.set_3leds(device)
+
+    spy_write_register.assert_called_once_with(device, hidpp10_constants.REGISTERS.three_leds, 17, 17)