diff --git a/src/util/src/tfile.c b/src/util/src/tfile.c
index 49b28dad6f9d11d24f0908b67ee50bb229a440d1..1fa6a3d096841f6b9405704bbaa0e302f536f2ce 100644
--- a/src/util/src/tfile.c
+++ b/src/util/src/tfile.c
@@ -106,7 +106,7 @@ bool tfValid(int64_t tfd) {
   return p != NULL;
 }
 
-int32_t tfLseek(int64_t tfd, int64_t offset, int32_t whence) {
+int64_t tfLseek(int64_t tfd, int64_t offset, int32_t whence) {
   void *p = taosAcquireRef(tsFileRsetId, tfd);
   if (p == NULL) return -1;