diff --git a/bsp/board/bl702/bl702_boot2/clock_config.h b/bsp/board/bl702/bl702_boot2/clock_config.h
index 21d0aa27..de8ad895 100644
--- a/bsp/board/bl702/bl702_boot2/clock_config.h
+++ b/bsp/board/bl702/bl702_boot2/clock_config.h
@@ -25,6 +25,7 @@
 #define _CLOCK_CONFIG_H
 
 #define XTAL_TYPE                  EXTERNAL_XTAL_32M
+#define XTAL_32K_TYPE              INTERNAL_RC_32K
 #define BSP_ROOT_CLOCK_SOURCE      ROOT_CLOCK_SOURCE_PLL_144M
 #define BSP_AUDIO_PLL_CLOCK_SOURCE ROOT_CLOCK_SOURCE_AUPLL_24000000_HZ
 
diff --git a/bsp/board/bl702/bl702_iot/clock_config.h b/bsp/board/bl702/bl702_iot/clock_config.h
index 0fdf8e30..77117c75 100644
--- a/bsp/board/bl702/bl702_iot/clock_config.h
+++ b/bsp/board/bl702/bl702_iot/clock_config.h
@@ -25,6 +25,7 @@
 #define _CLOCK_CONFIG_H
 
 #define XTAL_TYPE                  EXTERNAL_XTAL_32M
+#define XTAL_32K_TYPE              INTERNAL_RC_32K
 #define BSP_ROOT_CLOCK_SOURCE      ROOT_CLOCK_SOURCE_PLL_144M
 #define BSP_AUDIO_PLL_CLOCK_SOURCE ROOT_CLOCK_SOURCE_AUPLL_24000000_HZ