diff --git a/keymapper/getdevices.py b/keymapper/getdevices.py
index 07f88419..52db85da 100644
--- a/keymapper/getdevices.py
+++ b/keymapper/getdevices.py
@@ -61,6 +61,10 @@ class _GetDevicesProcess(multiprocessing.Process):
         # "Logitech USB Keyboard" and "Logitech USB Keyboard Consumer Control"
         grouped = {}
         for device in devices:
+            if device.phys.startswith('key-mapper'):
+                # injector device, not really periphery
+                continue
+
             # only keyboard devices
             # https://www.kernel.org/doc/html/latest/input/event-codes.html
             capabilities = device.capabilities().keys()
@@ -80,7 +84,7 @@ class _GetDevicesProcess(multiprocessing.Process):
             if grouped.get(usb) is None:
                 grouped[usb] = []
 
-            logger.debug('Adding %s', device.path)
+            logger.debug('Found "%s", %s, %s', device.name, device.path, usb)
 
             grouped[usb].append((device.name, device.path))
 
diff --git a/keymapper/injector.py b/keymapper/injector.py
index 709cd790..e3b8ffb9 100644
--- a/keymapper/injector.py
+++ b/keymapper/injector.py
@@ -108,6 +108,7 @@ class KeycodeInjector:
 
         keymapper_device = evdev.UInput(
             name=f'key-mapper {device.name}',
+            phys='key-mapper',
             events=capabilities
         )
 
diff --git a/tests/test.py b/tests/test.py
index 024e7517..39648748 100644
--- a/tests/test.py
+++ b/tests/test.py
@@ -114,6 +114,14 @@ def patch_evdev():
             'phys': 'usb-0000:03:00.0-3/input1',
             'name': 'device 3'
         },
+
+        # key-mapper devices are also ignored, another instance of key-mapper
+        # started injecting apparently.
+        '/dev/input/event40': {
+            'capabilities': {evdev.ecodes.EV_KEY: []},
+            'phys': 'key-mapper/input1',
+            'name': 'key-mapper device 2'
+        },
     }
 
     def list_devices():