diff --git a/lib_xua/src/core/pdm_mics/mic_array_conf.h b/lib_xua/src/core/pdm_mics/mic_array_conf.h
index 7f105514..e7ea8b46 100644
--- a/lib_xua/src/core/pdm_mics/mic_array_conf.h
+++ b/lib_xua/src/core/pdm_mics/mic_array_conf.h
@@ -12,4 +12,8 @@
 #define MIC_ARRAY_NUM_MICS (XUA_NUM_PDM_MICS)
 #endif
 
+#ifndef MIC_DUAL_FRAME_SIZE
+#define MIC_DUAL_FRAME_SIZE (MIC_ARRAY_FRAME_SIZE)
+#endif
+
 #endif /* MIC_ARRAY_CONF_H_ */