diff --git a/src/tsdb/inc/tsdbFile.h b/src/tsdb/inc/tsdbFile.h
index cb5c78ca841cf4d5602c435ca020810861caffb4..3020ecd2168afe300cefae078a94990a904083a2 100644
--- a/src/tsdb/inc/tsdbFile.h
+++ b/src/tsdb/inc/tsdbFile.h
@@ -50,7 +50,7 @@ typedef struct {
 } SMFile;
 
 void  tsdbInitMFile(SMFile* pMFile, SDiskID did, int vid, uint32_t ver);
-void  tsdbInitMFileEx(SMFile* pMFile, SMFile* pOMFile);
+void  tsdbInitMFileEx(SMFile* pMFile, const SMFile* pOMFile);
 int   tsdbEncodeSMFile(void** buf, SMFile* pMFile);
 void* tsdbDecodeSMFile(void* buf, SMFile* pMFile);
 int   tsdbEncodeSMFileEx(void** buf, SMFile* pMFile);
diff --git a/src/tsdb/src/tsdbFile.c b/src/tsdb/src/tsdbFile.c
index 9a53bf45779ed3d609e5f5b1e6357ad0d72ad2bb..e0e09b5deb79dd878ccee969bc27a91dc2f59268 100644
--- a/src/tsdb/src/tsdbFile.c
+++ b/src/tsdb/src/tsdbFile.c
@@ -42,7 +42,7 @@ void tsdbInitMFile(SMFile *pMFile, SDiskID did, int vid, uint32_t ver) {
   tfsInitFile(TSDB_FILE_F(pMFile), did.level, did.id, fname);
 }
 
-void tsdbInitMFileEx(SMFile *pMFile, SMFile *pOMFile) {
+void tsdbInitMFileEx(SMFile *pMFile, const SMFile *pOMFile) {
   *pMFile = *pOMFile;
   TSDB_FILE_SET_CLOSED(pMFile);
 }