diff --git a/rk3308/aispeech-2mic-64bit/dds_client/demo/demo_main b/rk3308/aispeech-2mic-64bit/dds_client/demo/demo_main
index 8282367..dc13cf1 100755
Binary files a/rk3308/aispeech-2mic-64bit/dds_client/demo/demo_main and b/rk3308/aispeech-2mic-64bit/dds_client/demo/demo_main differ
diff --git a/rk3308/aispeech-2mic-64bit/dds_client/demo/main.c b/rk3308/aispeech-2mic-64bit/dds_client/demo/main.c
index 59db2fa..cad5ab6 100755
--- a/rk3308/aispeech-2mic-64bit/dds_client/demo/main.c
+++ b/rk3308/aispeech-2mic-64bit/dds_client/demo/main.c
@@ -51,6 +51,7 @@ void do_system_sleep() {
 }
 void do_wifi_suspend_prepare() {
     system("dhd_priv setsuspendmode 1");
+    usleep(200*1000);
 }
 void do_wifi_resume_prepare() {
     system("dhd_priv setsuspendmode 0");
diff --git a/rk3308/aispeech-6mic-64bit/dds_client/demo/demo_main b/rk3308/aispeech-6mic-64bit/dds_client/demo/demo_main
index 7a3dbef..940d2cb 100755
Binary files a/rk3308/aispeech-6mic-64bit/dds_client/demo/demo_main and b/rk3308/aispeech-6mic-64bit/dds_client/demo/demo_main differ
diff --git a/rk3308/aispeech-6mic-64bit/dds_client/demo/main.c b/rk3308/aispeech-6mic-64bit/dds_client/demo/main.c
index f54736d..9e39c36 100755
--- a/rk3308/aispeech-6mic-64bit/dds_client/demo/main.c
+++ b/rk3308/aispeech-6mic-64bit/dds_client/demo/main.c
@@ -52,6 +52,7 @@ void do_system_sleep() {
 }
 void do_wifi_suspend_prepare() {
     system("dhd_priv setsuspendmode 1");
+    usleep(200*1000);
 }
 void do_wifi_resume_prepare() {
     system("dhd_priv setsuspendmode 0");