diff --git a/diseaseapi/covid.py b/diseaseapi/covid.py
index afde2a7..f78f547 100644
--- a/diseaseapi/covid.py
+++ b/diseaseapi/covid.py
@@ -880,7 +880,7 @@ async def vaccine_countries(self, last_days='all') -> List[VaccineCountry]:
         """
         endpoint = COVERAGE_COUNTRIES.format(self.api_url)
         params = {'lastdays': last_days}
-        data = await self.request_client.client.make_request(endpoint, params=params)
+        data = await self.request_client.make_request(endpoint, params=params)
 
         return [self._compile_vax_country(country) for country in data]
 
@@ -891,7 +891,7 @@ async def vaccine_country(self, country, last_days='all') -> VaccineCountry:
         """
         endpoint = COVERAGE_COUNTRY.format(self.api_url, country)
         params = {'lastdays': last_days}
-        data = self.request_client.make_request(endpoint, params=params)
+        data = await self.request_client.make_request(endpoint, params=params)
 
         return self._compile_vax_country(data)