diff --git a/include/xsync_packet.hpp b/include/xsync_packet.hpp
index 79568be..2eb3595 100644
--- a/include/xsync_packet.hpp
+++ b/include/xsync_packet.hpp
@@ -31,6 +31,7 @@ typedef struct {
   uint32_t eventid;
   uint32_t data[];
 } iflytop_xsync_event_report_packet_t;
+#pragma pack()
 
 typedef enum {
   ktimecode_report_event         = 0,