diff --git a/pandas/core/arrays/string_arrow.py b/pandas/core/arrays/string_arrow.py
index 2aa470b917a477..0345e98143e627 100644
--- a/pandas/core/arrays/string_arrow.py
+++ b/pandas/core/arrays/string_arrow.py
@@ -338,7 +338,7 @@ def _str_startswith(self, pat: str | tuple[str, ...], na: Scalar | None = None):
                 # mimic existing behaviour of string extension array
                 # and python string method
                 result = pa.array(
-                    np.full(len(self._pa_array), False), mask=isna(self._pa_array)
+                    np.zeros(len(self._pa_array), dtype=bool), mask=isna(self._pa_array)
                 )
             else:
                 result = pc.starts_with(self._pa_array, pattern=pat[0])
@@ -362,7 +362,7 @@ def _str_endswith(self, pat: str | tuple[str, ...], na: Scalar | None = None):
                 # mimic existing behaviour of string extension array
                 # and python string method
                 result = pa.array(
-                    np.full(len(self._pa_array), False), mask=isna(self._pa_array)
+                    np.zeros(len(self._pa_array), dtype=bool), mask=isna(self._pa_array)
                 )
             else:
                 result = pc.ends_with(self._pa_array, pattern=pat[0])