diff --git a/pint_pandas/pint_array.py b/pint_pandas/pint_array.py
index 8bd3c56..137f19d 100644
--- a/pint_pandas/pint_array.py
+++ b/pint_pandas/pint_array.py
@@ -872,7 +872,7 @@ def convert_values(param):
 
             if coerce_to_dtype:
                 try:
-                    res = cls.from_1darray_quantity(res)
+                    res = cls.from_1darray_quantity(res, self.dtype.subdtype)
                 except TypeError:
                     pass