diff --git a/pandas/tests/extension/list/array.py b/pandas/tests/extension/list/array.py
index 0ca9fadb68829..6dd00ad3b06ba 100644
--- a/pandas/tests/extension/list/array.py
+++ b/pandas/tests/extension/list/array.py
@@ -36,7 +36,7 @@ def construct_from_string(cls, string):
         if string == cls.name:
             return cls()
         else:
-            raise TypeError("Cannot construct a '{}' from '{}'".format(cls, string))
+            raise TypeError(f"Cannot construct a '{cls}' from '{string}'")
 
 
 class ListArray(ExtensionArray):