diff --git a/freqtrade/exchange/exchange.py b/freqtrade/exchange/exchange.py
index 669a5c7d1..6706e94ab 100644
--- a/freqtrade/exchange/exchange.py
+++ b/freqtrade/exchange/exchange.py
@@ -211,7 +211,7 @@ class Exchange:
         if self.loop and not self.loop.is_closed():
             self.loop.close()
 
-    def _init_async_loop(self):
+    def _init_async_loop(self) -> asyncio.AbstractEventLoop:
         loop = asyncio.new_event_loop()
         asyncio.set_event_loop(loop)
         return loop
diff --git a/freqtrade/optimize/hyperopt.py b/freqtrade/optimize/hyperopt.py
index bf6bb1ea0..fe590f0d2 100644
--- a/freqtrade/optimize/hyperopt.py
+++ b/freqtrade/optimize/hyperopt.py
@@ -556,7 +556,7 @@ class Hyperopt:
         self.backtesting.exchange.close()
         self.backtesting.exchange._api = None
         self.backtesting.exchange._api_async = None
-        self.backtesting.exchange.loop = None
+        self.backtesting.exchange.loop = None  # type: ignore
         self.backtesting.exchange._loop_lock = None  # type: ignore
         self.backtesting.exchange._cache_lock = None  # type: ignore
         # self.backtesting.exchange = None  # type: ignore