diff --git a/routers/api/actions/artifacts_chunks.go b/routers/api/actions/artifacts_chunks.go
index 3a81724b3a..b0c96585cb 100644
--- a/routers/api/actions/artifacts_chunks.go
+++ b/routers/api/actions/artifacts_chunks.go
@@ -39,7 +39,7 @@ func saveUploadChunkBase(st storage.ObjectStorage, ctx *ArtifactContext,
 		r = io.TeeReader(r, hasher)
 	}
 	// save chunk to storage
-	writtenSize, err := st.Save(storagePath, r, -1)
+	writtenSize, err := st.Save(storagePath, r, contentSize)
 	if err != nil {
 		return -1, fmt.Errorf("save chunk to storage error: %v", err)
 	}
@@ -208,7 +208,7 @@ func mergeChunksForArtifact(ctx *ArtifactContext, chunks []*chunkFileItem, st st
 
 	// save merged file
 	storagePath := fmt.Sprintf("%d/%d/%d.%s", artifact.RunID%255, artifact.ID%255, time.Now().UnixNano(), extension)
-	written, err := st.Save(storagePath, mergedReader, -1)
+	written, err := st.Save(storagePath, mergedReader, artifact.FileCompressedSize)
 	if err != nil {
 		return fmt.Errorf("save merged file error: %v", err)
 	}