diff --git a/tests/app_test_i2s_loopback/xua_conf.h b/tests/app_test_i2s_loopback/xua_conf.h
index 6dc9c95d..0b555dba 100644
--- a/tests/app_test_i2s_loopback/xua_conf.h
+++ b/tests/app_test_i2s_loopback/xua_conf.h
@@ -22,5 +22,7 @@
 #define AUDIO_CLASS_FALLBACK 0
 #define BCD_DEVICE 0x1234
 #define XUA_DFU_EN          0
+#define MIC_DUAL_ENABLED 1        //Use single thread, dual PDM mic
+#define MIC_ARRAY_FRAME_SIZE 240
 
 #endif // __custom_defines_h__