diff --git a/src/packet_io/packet_io.h b/src/packet_io/packet_io.h
index b46e2ad..20b2797 100644
--- a/src/packet_io/packet_io.h
+++ b/src/packet_io/packet_io.h
@@ -9,7 +9,7 @@ extern "C"
 
 #include "macro.h"
 
-struct packet_io_stat
+struct __attribute__((aligned(64))) packet_io_stat
 {
     // device packet
     uint64_t dev_rx_pkts;