1 files changed, 1 insertions, 1 deletions

diff --git a/uisimulator/common/file.h b/uisimulator/common/file.h
index 0e50031556..7ea59a0b74 100644
--- a/uisimulator/common/file.h
+++ b/uisimulator/common/file.h
@@ -43,7 +43,7 @@ typedef unsigned int mode_t;
 int sim_open(const char *name, int opts);
 int sim_close(int fd);
 int sim_rename(const char *oldpath, const char *newpath);
-int sim_filesize(int fd);
+off_t sim_filesize(int fd);
 int sim_creat(const char *name, mode_t mode);
 int sim_remove(const char *name);