diff --git a/homeassistant/components/modem_callerid/config_flow.py b/homeassistant/components/modem_callerid/config_flow.py
index 70fd3969e02d21..aaa883c2e51b6a 100644
--- a/homeassistant/components/modem_callerid/config_flow.py
+++ b/homeassistant/components/modem_callerid/config_flow.py
@@ -32,10 +32,10 @@ def __init__(self) -> None:
 
     async def async_step_usb(self, discovery_info: usb.UsbServiceInfo) -> FlowResult:
         """Handle USB Discovery."""
-        device = discovery_info["device"]
+        device = discovery_info[usb.ATTR_DEVICE]
 
         dev_path = await self.hass.async_add_executor_job(usb.get_serial_by_id, device)
-        unique_id = f"{discovery_info['vid']}:{discovery_info['pid']}_{discovery_info['serial_number']}_{discovery_info['manufacturer']}_{discovery_info['description']}"
+        unique_id = f"{discovery_info[usb.ATTR_VID]}:{discovery_info[usb.ATTR_PID]}_{discovery_info[usb.ATTR_SERIAL_NUMBER]}_{discovery_info[usb.ATTR_MANUFACTURER]}_{discovery_info[usb.ATTR_DESCRIPTION]}"
         if (
             await self.validate_device_errors(dev_path=dev_path, unique_id=unique_id)
             is None
diff --git a/tests/components/modem_callerid/test_config_flow.py b/tests/components/modem_callerid/test_config_flow.py
index 4d76ae8a944f5f..0956a8fe1b7953 100644
--- a/tests/components/modem_callerid/test_config_flow.py
+++ b/tests/components/modem_callerid/test_config_flow.py
@@ -17,14 +17,14 @@
 
 from . import _patch_config_flow_modem
 
-DISCOVERY_INFO = {
-    "device": phone_modem.DEFAULT_PORT,
-    "pid": "1340",
-    "vid": "0572",
-    "serial_number": "1234",
-    "description": "modem",
-    "manufacturer": "Connexant",
-}
+DISCOVERY_INFO = usb.UsbServiceInfo(
+    device=phone_modem.DEFAULT_PORT,
+    pid="1340",
+    vid="0572",
+    serial_number="1234",
+    description="modem",
+    manufacturer="Connexant",
+)
 
 
 def _patch_setup():