diff --git a/electrum/lrucache.py b/electrum/lrucache.py
index 9f81984d7f8d..0cdffc9e546b 100644
--- a/electrum/lrucache.py
+++ b/electrum/lrucache.py
@@ -45,6 +45,8 @@ def pop(self, _):
 
 _KT = TypeVar("_KT")
 _VT = TypeVar("_VT")
+
+
 class Cache(collections.abc.MutableMapping[_KT, _VT]):
     """Mutable mapping to serve as a simple cache or cache base class."""
 
@@ -70,10 +72,7 @@ def __repr__(self):
         )
 
     def __getitem__(self, key: _KT) -> _VT:
-        try:
-            return self.__data[key]
-        except KeyError:
-            return self.__missing__(key)
+        return self.__data[key]
 
     def __setitem__(self, key: _KT, value: _VT) -> None:
         maxsize = self.__maxsize