diff --git a/src/litdata/streaming/client.py b/src/litdata/streaming/client.py
index 26f43fbf..cc792142 100644
--- a/src/litdata/streaming/client.py
+++ b/src/litdata/streaming/client.py
@@ -105,7 +105,7 @@ class R2Client(S3Client):
 
     def __init__(
         self,
-        refetch_interval: int = 3600,  # 1 hour - this is the default refresh interval for R2 credentials
+        refetch_interval: int = 3300,
         storage_options: Optional[dict] = {},
         session_options: Optional[dict] = {},
     ) -> None:
diff --git a/tests/streaming/test_client.py b/tests/streaming/test_client.py
index ace4fe9f..799e1681 100644
--- a/tests/streaming/test_client.py
+++ b/tests/streaming/test_client.py
@@ -111,7 +111,7 @@ def test_r2_client_initialization():
     """Test R2Client initialization with different parameters."""
     # Test with default parameters
     r2_client = client.R2Client()
-    assert r2_client._refetch_interval == 3600  # 1 hour default
+    assert r2_client._refetch_interval == 3300
     assert r2_client._last_time is None
     assert r2_client._client is None
     assert r2_client._base_storage_options == {}