diff --git a/internal/core/src/common/FieldMeta.h b/internal/core/src/common/FieldMeta.h
index 4d44445913..3ddf87c0d3 100644
--- a/internal/core/src/common/FieldMeta.h
+++ b/internal/core/src/common/FieldMeta.h
@@ -10,14 +10,17 @@
 // or implied. See the License for the specific language governing permissions and limitations under the License
 
 #pragma once
-#include "common/Types.h"
-#include "utils/Status.h"
-#include "exceptions/EasyAssert.h"
-#include <string>
-#include <stdexcept>
+
 #include <optional>
+#include <stdexcept>
+#include <string>
+
+#include "common/Types.h"
+#include "exceptions/EasyAssert.h"
+#include "utils/Status.h"
 
 namespace milvus {
+
 inline int
 datatype_sizeof(DataType data_type, int dim = 1) {
     switch (data_type) {