diff --git a/homeassistant/components/haveibeenpwned/sensor.py b/homeassistant/components/haveibeenpwned/sensor.py
index 199035b2713..7caf9690bd8 100644
--- a/homeassistant/components/haveibeenpwned/sensor.py
+++ b/homeassistant/components/haveibeenpwned/sensor.py
@@ -5,7 +5,6 @@ from datetime import timedelta
 from http import HTTPStatus
 import logging
 
-from aiohttp.hdrs import USER_AGENT
 import requests
 import voluptuous as vol
 
@@ -160,7 +159,7 @@ class HaveIBeenPwnedData:
         """Get the latest data for current email from REST service."""
         try:
             url = f"{URL}{self._email}?truncateResponse=false"
-            header = {USER_AGENT: HA_USER_AGENT, "hibp-api-key": self._api_key}
+            header = {"User-Agent": HA_USER_AGENT, "hibp-api-key": self._api_key}
             _LOGGER.debug("Checking for breaches for email: %s", self._email)
             req = requests.get(url, headers=header, allow_redirects=True, timeout=5)