diff --git a/checks/check_airq.py b/checks/check_airq.py
index e4586e4..e55d037 100755
--- a/checks/check_airq.py
+++ b/checks/check_airq.py
@@ -103,7 +103,7 @@ class AirQ:
         matches = list()
         # log has con is the log entry rolls out
         command = ["journalctl", "-k", "--no-pager"] # alternative: dmesg # maybe usefull lsusb
-        pattern = re.compile(r'hidraw\d{2}')
+        pattern = re.compile(r'hidraw\d{1,2}')
         ## get kernel logs
         result = subprocess.run(command, stdout=subprocess.PIPE, stderr=subprocess.PIPE, text=True)
         if result.returncode != 0:
@@ -121,9 +121,9 @@ class AirQ:
         ## search in found log line the usb name and verify path exists
         if len(matches) > 0:
             dev_path = f'/dev/{matches[0]}'
-            if path.exists(f'/dev/{matches[0]}'):
-                logging.debug(f'usb device is in /dev/{matches[0]}')
-                self.device = f'/dev/{matches[0]}'
+            if path.exists(dev_path):
+                logging.debug(f'usb device is under path {dev_path}')
+                self.device = dev_path
                 return True
         logging.error(f'usb device not found!')
         return False