diff --git a/src/tlog.c b/src/tlog.c
index 66579df..8b69e6d 100644
--- a/src/tlog.c
+++ b/src/tlog.c
@@ -306,7 +306,7 @@ void tlog_set_maxline_size(struct tlog_log *log, int size)
     log->max_line_size = size;
 }
 
-void tlog_set_permission(struct tlog_log *log, unsigned int file, unsigned int archive)
+void tlog_set_permission(struct tlog_log *log, mode_t file, mode_t archive)
 {
     log->file_perm = file;
     log->archive_perm = archive;