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 f65e6da1..e29704d8 100644
--- a/lib_xua/src/core/pdm_mics/mic_array_conf.h
+++ b/lib_xua/src/core/pdm_mics/mic_array_conf.h
@@ -3,7 +3,12 @@
 
 #include "xua_conf_full.h"
 
+#ifndef MIC_ARRAY_MAX_FRAME_SIZE_LOG2
 #define MIC_ARRAY_MAX_FRAME_SIZE_LOG2 0
+#endif
+
+#ifndef MIC_ARRAY_NUM_MICS
 #define MIC_ARRAY_NUM_MICS (NUM_PDM_MICS)
+#endif
 
 #endif /* MIC_ARRAY_CONF_H_ */