diff --git a/pandas/tests/extension/decimal/array.py b/pandas/tests/extension/decimal/array.py
index 94695bb3d306d..770b703def87d 100644
--- a/pandas/tests/extension/decimal/array.py
+++ b/pandas/tests/extension/decimal/array.py
@@ -10,7 +10,6 @@
 import pandas as pd
 from pandas.api.extensions import register_extension_dtype
 from pandas.core.arrays import ExtensionArray, ExtensionScalarOpsMixin
-from pandas.core.common import is_bool_indexer
 from pandas.core.indexers import check_bool_array_indexer
 
 
@@ -111,8 +110,13 @@ def __getitem__(self, item):
         if isinstance(item, numbers.Integral):
             return self._data[item]
         else:
-            if is_bool_indexer(item):
-                item = check_bool_array_indexer(self, item)
+            # array, slice.
+            if pd.api.types.is_list_like(item):
+                if not pd.api.types.is_array_like(item):
+                    item = pd.array(item)
+                dtype = item.dtype
+                if pd.api.types.is_bool_dtype(dtype):
+                    item = check_bool_array_indexer(self, item)
             return type(self)(self._data[item])
 
     def take(self, indexer, allow_fill=False, fill_value=None):