diff --git a/s3stream/src/main/java/com/automq/stream/s3/index/LocalStreamRangeIndexCache.java b/s3stream/src/main/java/com/automq/stream/s3/index/LocalStreamRangeIndexCache.java
index 2e4cb02b07..86d3abc770 100644
--- a/s3stream/src/main/java/com/automq/stream/s3/index/LocalStreamRangeIndexCache.java
+++ b/s3stream/src/main/java/com/automq/stream/s3/index/LocalStreamRangeIndexCache.java
@@ -274,7 +274,7 @@ public static ByteBuf toBuffer(Map<Long, SparseRangeIndex> streamRangeIndexMap)
             + Integer.BYTES // stream num
             + streamRangeIndexMap.values().stream().mapToInt(index -> Long.BYTES // stream id
             + Integer.BYTES // range index num
-            + index.getRangeIndexList().size() * RangeIndex.SIZE).sum();
+            + index.getRangeIndexList().size() * (3 * Long.BYTES)).sum();
         ByteBuf buffer = ByteBufAlloc.byteBuffer(capacity);
         try {
             buffer.writeShort(VERSION);
diff --git a/s3stream/src/main/java/com/automq/stream/s3/index/NodeRangeIndexCache.java b/s3stream/src/main/java/com/automq/stream/s3/index/NodeRangeIndexCache.java
index b1306c6c66..b092c97872 100644
--- a/s3stream/src/main/java/com/automq/stream/s3/index/NodeRangeIndexCache.java
+++ b/s3stream/src/main/java/com/automq/stream/s3/index/NodeRangeIndexCache.java
@@ -87,7 +87,7 @@ public CompletableFuture<Long> searchObjectId(long streamId, long startOffset) {
         public synchronized CompletableFuture<Integer> size() {
             if (sizeCf == null) {
                 sizeCf = this.streamRangeIndexMapCf.thenApply(v -> v.values().stream()
-                    .mapToInt(rangeIndices -> Long.BYTES + ZGC_OBJECT_HEADER_SIZE_BYTES + rangeIndices.size() * RangeIndex.SIZE).sum());
+                    .mapToInt(rangeIndices -> Long.BYTES + ZGC_OBJECT_HEADER_SIZE_BYTES + rangeIndices.size() * RangeIndex.OBJECT_SIZE).sum());
             }
             return sizeCf;
         }
diff --git a/s3stream/src/main/java/com/automq/stream/s3/index/RangeIndex.java b/s3stream/src/main/java/com/automq/stream/s3/index/RangeIndex.java
index 168f4df6d0..a6548a2e68 100644
--- a/s3stream/src/main/java/com/automq/stream/s3/index/RangeIndex.java
+++ b/s3stream/src/main/java/com/automq/stream/s3/index/RangeIndex.java
@@ -14,7 +14,7 @@
 import com.google.common.base.Objects;
 
 public class RangeIndex implements Comparable<RangeIndex> {
-    public static final int SIZE = 3 * Long.BYTES + NodeRangeIndexCache.ZGC_OBJECT_HEADER_SIZE_BYTES;
+    public static final int OBJECT_SIZE = 3 * Long.BYTES + NodeRangeIndexCache.ZGC_OBJECT_HEADER_SIZE_BYTES;
     private final long startOffset;
     private final long endOffset;
     private final long objectId;
diff --git a/s3stream/src/test/java/com/automq/stream/s3/index/NodeRangeIndexCacheTest.java b/s3stream/src/test/java/com/automq/stream/s3/index/NodeRangeIndexCacheTest.java
index c856513cd1..934f5bcc09 100644
--- a/s3stream/src/test/java/com/automq/stream/s3/index/NodeRangeIndexCacheTest.java
+++ b/s3stream/src/test/java/com/automq/stream/s3/index/NodeRangeIndexCacheTest.java
@@ -111,7 +111,7 @@ private List<RangeIndex> createRangeIndex(int size) {
         int curr = 0;
         while (curr < size) {
             index.add(new RangeIndex(0, 0, 0));
-            curr += RangeIndex.SIZE;
+            curr += RangeIndex.OBJECT_SIZE;
         }
         return index;
     }