diff --git a/bundles/org.openhab.core.config.discovery.usbserial.linuxsysfs/src/main/java/org/openhab/core/config/discovery/usbserial/linuxsysfs/internal/SysfsUsbSerialScanner.java b/bundles/org.openhab.core.config.discovery.usbserial.linuxsysfs/src/main/java/org/openhab/core/config/discovery/usbserial/linuxsysfs/internal/SysfsUsbSerialScanner.java
index 50483ab06..0da7cd35b 100644
--- a/bundles/org.openhab.core.config.discovery.usbserial.linuxsysfs/src/main/java/org/openhab/core/config/discovery/usbserial/linuxsysfs/internal/SysfsUsbSerialScanner.java
+++ b/bundles/org.openhab.core.config.discovery.usbserial.linuxsysfs/src/main/java/org/openhab/core/config/discovery/usbserial/linuxsysfs/internal/SysfsUsbSerialScanner.java
@@ -222,7 +222,10 @@ public class SysfsUsbSerialScanner implements UsbSerialScanner {
      * of a USB device.
      */
     private @Nullable Path getUsbInterfaceParentPath(Path sysfsPath) {
-        if (sysfsPath.getFileName() == null) {
+        if (sysfsPath.toString().indexOf('-') == -1) {
+            // a fast path to avoid pattern matching for dozens of not matching directories
+            return null;
+        } else if (sysfsPath.getFileName() == null) {
             return null;
         } else if (SYSFS_USB_INTERFACE_DIRECTORY_PATTERN.matcher(sysfsPath.getFileName().toString()).matches()) {
             return sysfsPath;