diff --git a/core/src/raw/http_util/body.rs b/core/src/raw/http_util/body.rs
index 38f509c60634..ac0174090db8 100644
--- a/core/src/raw/http_util/body.rs
+++ b/core/src/raw/http_util/body.rs
@@ -164,15 +164,6 @@ impl IncomingAsyncBody {
 }
 
 impl oio::Read for IncomingAsyncBody {
-    async fn seek(&mut self, pos: io::SeekFrom) -> Result<u64> {
-        let _ = pos;
-
-        Err(Error::new(
-            ErrorKind::Unsupported,
-            "output reader doesn't support seeking",
-        ))
-    }
-
     async fn read(&mut self, size: usize) -> Result<Bytes> {
         if self.size == Some(0) {
             return Ok(Bytes::new());
@@ -191,7 +182,18 @@ impl oio::Read for IncomingAsyncBody {
             };
         }
 
-        let bs = self.chunk.split_to(min(size, self.chunk.len()));
+        let size = min(size, self.chunk.len());
+        self.consumed += size as u64;
+        let bs = self.chunk.split_to(size);
         Ok(bs)
     }
+
+    async fn seek(&mut self, pos: io::SeekFrom) -> Result<u64> {
+        let _ = pos;
+
+        Err(Error::new(
+            ErrorKind::Unsupported,
+            "output reader doesn't support seeking",
+        ))
+    }
 }