diff --git a/src/minivhd_util.h b/src/minivhd_util.h
index 123b775..c8ccacb 100644
--- a/src/minivhd_util.h
+++ b/src/minivhd_util.h
@@ -6,5 +6,7 @@
 
 bool mvhd_is_conectix_str(const void* buffer);
 void mvhd_generate_uuid(uint8_t *uuid);
+uint32_t vhd_calc_timestamp(void);
+time_t vhd_get_created_time(MVHDMeta *vhdm);
 
 #endif
\ No newline at end of file