diff --git a/Windows.py b/Windows.py
index 19e4472..0e1e5fd 100644
--- a/Windows.py
+++ b/Windows.py
@@ -88,6 +88,9 @@ def get_controller_class(self, controller):
         if interface:
             return shared.USBControllerTypes(interface)
         service = self.get_property_from_wmi(controller["identifiers"]["instance_id"], PnpDeviceProperties.SERVICE)
+        if not isinstance(service, str):
+            shared.debug(f"Unknown controller type for interface {interface} and service {service}!")
+            return shared.USBControllerTypes.Unknown
         if service.lower() == "usbxhci":
             return shared.USBControllerTypes.XHCI
         elif service.lower() == "usbehci":
diff --git a/base.py b/base.py
index 90cfa9e..34ada5d 100644
--- a/base.py
+++ b/base.py
@@ -15,7 +15,7 @@
 
 from Scripts import shared, utils
 
-CURRENT_VERSION = "0.0.5"
+CURRENT_VERSION = "0.0.6"
 
 
 class Colors(Enum):