diff --git a/src/mixedbread/lib/parsing_jobs.py b/src/mixedbread/lib/parsing_jobs.py
index 2985cf3..a5c087d 100644
--- a/src/mixedbread/lib/parsing_jobs.py
+++ b/src/mixedbread/lib/parsing_jobs.py
@@ -7,6 +7,7 @@
 
 from . import polling
 from .._types import Omit, NotGiven, FileTypes, omit, not_given
+from .._utils import is_given
 from .multipart_upload import MultipartUploadOptions
 from ..types.parsing.parsing_job import ParsingJob
 from ..types.parsing.element_type import ElementType
@@ -35,13 +36,13 @@ def poll(
         **kwargs: Any,
     ) -> ParsingJob:
         """Poll a job's status until it reaches a terminal state."""
-        polling_interval_ms = poll_interval_ms or 500
-        polling_timeout_ms = poll_timeout_ms or None
+        polling_interval_ms = poll_interval_ms if is_given(poll_interval_ms) else 500
+        polling_timeout_ms = poll_timeout_ms if is_given(poll_timeout_ms) else None
         return polling.poll(
             fn=functools.partial(self.retrieve, job_id, **kwargs),
             condition=lambda res: res.status in _TERMINAL,
             interval_seconds=polling_interval_ms / 1000,
-            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms else None,
+            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms is not None else None,
         )
 
     def create_and_poll(
@@ -123,13 +124,13 @@ async def poll(
         **kwargs: Any,
     ) -> ParsingJob:
         """Poll a job's status until it reaches a terminal state."""
-        polling_interval_ms = poll_interval_ms or 500
-        polling_timeout_ms = poll_timeout_ms or None
+        polling_interval_ms = poll_interval_ms if is_given(poll_interval_ms) else 500
+        polling_timeout_ms = poll_timeout_ms if is_given(poll_timeout_ms) else None
         return await polling.poll_async(
             fn=functools.partial(self.retrieve, job_id, **kwargs),
             condition=lambda res: res.status in _TERMINAL,
             interval_seconds=polling_interval_ms / 1000,
-            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms else None,
+            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms is not None else None,
         )
 
     async def create_and_poll(
diff --git a/src/mixedbread/lib/polling.py b/src/mixedbread/lib/polling.py
index f2aa95b..ac8f473 100644
--- a/src/mixedbread/lib/polling.py
+++ b/src/mixedbread/lib/polling.py
@@ -65,7 +65,7 @@ def poll(
         if max_attempts and attempt >= max_attempts:
             raise RuntimeError(f"Maximum attempts ({max_attempts}) reached")
 
-        if timeout_seconds:
+        if timeout_seconds is not None:
             elapsed = (datetime.now() - start_time).total_seconds()
             if elapsed >= timeout_seconds:
                 raise TimeoutError(f"Timeout ({timeout_seconds}s) reached")
@@ -114,7 +114,7 @@ async def poll_async(
         if max_attempts and attempt >= max_attempts:
             raise RuntimeError(f"Maximum attempts ({max_attempts}) reached")
 
-        if timeout_seconds:
+        if timeout_seconds is not None:
             elapsed = (datetime.now() - start_time).total_seconds()
             if elapsed >= timeout_seconds:
                 raise TimeoutError(f"Timeout ({timeout_seconds}s) reached")
diff --git a/src/mixedbread/lib/store_files.py b/src/mixedbread/lib/store_files.py
index 682e9ed..3eedc41 100644
--- a/src/mixedbread/lib/store_files.py
+++ b/src/mixedbread/lib/store_files.py
@@ -12,6 +12,7 @@
 
 from . import polling
 from .._types import Omit, NotGiven, FileTypes, omit, not_given
+from .._utils import is_given
 from .multipart_upload import MultipartUploadOptions
 from ..types.stores.store_file import StoreFile
 from ..types.stores.store_file_config_param import StoreFileConfigParam
@@ -48,13 +49,13 @@ def poll(
         Returns:
             The file object once it reaches a terminal state
         """
-        polling_interval_ms = poll_interval_ms or 500
-        polling_timeout_ms = poll_timeout_ms or None
+        polling_interval_ms = poll_interval_ms if is_given(poll_interval_ms) else 500
+        polling_timeout_ms = poll_timeout_ms if is_given(poll_timeout_ms) else None
         return polling.poll(
             fn=functools.partial(self.retrieve, file_identifier, store_identifier=store_identifier, **kwargs),
             condition=lambda res: res.status in _TERMINAL,
             interval_seconds=polling_interval_ms / 1000,
-            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms else None,
+            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms is not None else None,
         )
 
     def create_and_poll(
@@ -163,13 +164,13 @@ async def poll(
         **kwargs: Any,
     ) -> StoreFile:
         """Poll a file's status until it reaches a terminal state."""
-        polling_interval_ms = poll_interval_ms or 500
-        polling_timeout_ms = poll_timeout_ms or None
+        polling_interval_ms = poll_interval_ms if is_given(poll_interval_ms) else 500
+        polling_timeout_ms = poll_timeout_ms if is_given(poll_timeout_ms) else None
         return await polling.poll_async(
             fn=functools.partial(self.retrieve, file_identifier, store_identifier=store_identifier, **kwargs),
             condition=lambda res: res.status in _TERMINAL,
             interval_seconds=polling_interval_ms / 1000,
-            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms else None,
+            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms is not None else None,
         )
 
     async def create_and_poll(
diff --git a/src/mixedbread/lib/stores.py b/src/mixedbread/lib/stores.py
index 6ee1e43..5e86c2f 100644
--- a/src/mixedbread/lib/stores.py
+++ b/src/mixedbread/lib/stores.py
@@ -12,6 +12,7 @@
 
 from . import polling
 from .._types import Omit, NotGiven, omit, not_given
+from .._utils import is_given
 from ..types.store import Store
 
 if TYPE_CHECKING:
@@ -51,13 +52,13 @@ def poll(
         Returns:
             The store once it has settled
         """
-        polling_interval_ms = poll_interval_ms or _DEFAULT_POLL_INTERVAL_MS
-        polling_timeout_ms = poll_timeout_ms or None
+        polling_interval_ms = poll_interval_ms if is_given(poll_interval_ms) else _DEFAULT_POLL_INTERVAL_MS
+        polling_timeout_ms = poll_timeout_ms if is_given(poll_timeout_ms) else None
         return polling.poll(
             fn=functools.partial(self.retrieve, store_identifier, **kwargs),
             condition=_is_settled,
             interval_seconds=polling_interval_ms / 1000,
-            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms else None,
+            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms is not None else None,
         )
 
     def copy_and_poll(
@@ -89,13 +90,13 @@ async def poll(
         **kwargs: Any,
     ) -> Store:
         """Poll a store until it is no longer ``in_progress``."""
-        polling_interval_ms = poll_interval_ms or _DEFAULT_POLL_INTERVAL_MS
-        polling_timeout_ms = poll_timeout_ms or None
+        polling_interval_ms = poll_interval_ms if is_given(poll_interval_ms) else _DEFAULT_POLL_INTERVAL_MS
+        polling_timeout_ms = poll_timeout_ms if is_given(poll_timeout_ms) else None
         return await polling.poll_async(
             fn=functools.partial(self.retrieve, store_identifier, **kwargs),
             condition=_is_settled,
             interval_seconds=polling_interval_ms / 1000,
-            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms else None,
+            timeout_seconds=polling_timeout_ms / 1000 if polling_timeout_ms is not None else None,
         )
 
     async def copy_and_poll(
diff --git a/tests/test_store_helpers.py b/tests/test_store_helpers.py
index cecee29..8f24e69 100644
--- a/tests/test_store_helpers.py
+++ b/tests/test_store_helpers.py
@@ -1,5 +1,5 @@
 from typing import List
-from unittest.mock import Mock, AsyncMock
+from unittest.mock import Mock, AsyncMock, patch
 
 import pytest
 
@@ -46,6 +46,22 @@ def test_poll_returns_a_failed_copy() -> None:
     assert stores.poll("vs_copy", poll_interval_ms=1).status == "failed"
 
 
+def test_poll_honors_zero_interval() -> None:
+    stores = _Stores(["in_progress", "completed"])
+
+    with patch("time.sleep") as sleep_mock:
+        assert stores.poll("vs_copy", poll_interval_ms=0).status == "completed"
+
+    sleep_mock.assert_called_once_with(0.0)
+
+
+def test_poll_honors_zero_timeout() -> None:
+    stores = _Stores(["in_progress", "in_progress", "completed"])
+
+    with pytest.raises(TimeoutError):
+        stores.poll("vs_copy", poll_interval_ms=1, poll_timeout_ms=0)
+
+
 @pytest.mark.asyncio
 async def test_async_copy_and_poll() -> None:
     stores = _AsyncStores(["in_progress", "completed"])
@@ -54,3 +70,21 @@ async def test_async_copy_and_poll() -> None:
 
     assert result.status == "completed"
     assert stores.retrieve_mock.await_count == 2
+
+
+@pytest.mark.asyncio
+async def test_async_poll_honors_zero_interval() -> None:
+    stores = _AsyncStores(["in_progress", "completed"])
+
+    with patch("asyncio.sleep", new=AsyncMock()) as sleep_mock:
+        assert (await stores.poll("vs_copy", poll_interval_ms=0)).status == "completed"
+
+    sleep_mock.assert_called_once_with(0.0)
+
+
+@pytest.mark.asyncio
+async def test_async_poll_honors_zero_timeout() -> None:
+    stores = _AsyncStores(["in_progress", "in_progress", "completed"])
+
+    with pytest.raises(TimeoutError):
+        await stores.poll("vs_copy", poll_interval_ms=1, poll_timeout_ms=0)