diff --git a/core/src/services/cos/backend.rs b/core/src/services/cos/backend.rs
index e01da22cbd4..be19e08717d 100644
--- a/core/src/services/cos/backend.rs
+++ b/core/src/services/cos/backend.rs
@@ -277,7 +277,11 @@ impl Accessor for CosBackend {
                 // The max multipart size of COS is 5 GiB.
                 //
                 // ref: <https://www.tencentcloud.com/document/product/436/14112>
-                write_multi_max_size: Some(5 * 1024 * 1024 * 1024),
+                write_multi_max_size: if cfg!(target_pointer_width = "64") {
+                    Some(5 * 1024 * 1024 * 1024)
+                } else {
+                    Some(usize::MAX)
+                },
 
                 delete: true,
                 create_dir: true,
diff --git a/core/src/services/obs/backend.rs b/core/src/services/obs/backend.rs
index 3d6281e863b..cff7c254f4e 100644
--- a/core/src/services/obs/backend.rs
+++ b/core/src/services/obs/backend.rs
@@ -283,7 +283,11 @@ impl Accessor for ObsBackend {
                 // The max multipart size of OBS is 5 GiB.
                 //
                 // ref: <https://support.huaweicloud.com/intl/en-us/ugobs-obs/obs_41_0021.html>
-                write_multi_max_size: Some(5 * 1024 * 1024 * 1024),
+                write_multi_max_size: if cfg!(target_pointer_width = "64") {
+                    Some(5 * 1024 * 1024 * 1024)
+                } else {
+                    Some(usize::MAX)
+                },
 
                 delete: true,
                 create_dir: true,
diff --git a/core/src/services/oss/backend.rs b/core/src/services/oss/backend.rs
index 1e32d8ea04e..cc4dddbaefd 100644
--- a/core/src/services/oss/backend.rs
+++ b/core/src/services/oss/backend.rs
@@ -410,7 +410,11 @@ impl Accessor for OssBackend {
                 // The max multipart size of OSS is 5 GiB.
                 //
                 // ref: <https://www.alibabacloud.com/help/en/oss/user-guide/multipart-upload-12>
-                write_multi_max_size: Some(5 * 1024 * 1024 * 1024),
+                write_multi_max_size: if cfg!(target_pointer_width = "64") {
+                    Some(5 * 1024 * 1024 * 1024)
+                } else {
+                    Some(usize::MAX)
+                },
 
                 delete: true,
                 create_dir: true,
diff --git a/core/src/services/s3/backend.rs b/core/src/services/s3/backend.rs
index 88dea3af948..82e420421df 100644
--- a/core/src/services/s3/backend.rs
+++ b/core/src/services/s3/backend.rs
@@ -923,7 +923,11 @@ impl Accessor for S3Backend {
                 // The max multipart size of S3 is 5 GiB.
                 //
                 // ref: <https://docs.aws.amazon.com/AmazonS3/latest/userguide/qfacts.html>
-                write_multi_max_size: Some(5 * 1024 * 1024 * 1024),
+                write_multi_max_size: if cfg!(target_pointer_width = "64") {
+                    Some(5 * 1024 * 1024 * 1024)
+                } else {
+                    Some(usize::MAX)
+                },
 
                 create_dir: true,
                 delete: true,