diff --git a/soc/andestech/ae350/Kconfig.defconfig b/soc/andestech/ae350/Kconfig.defconfig
index ba36eddc354..b760c38d64d 100644
--- a/soc/andestech/ae350/Kconfig.defconfig
+++ b/soc/andestech/ae350/Kconfig.defconfig
@@ -36,4 +36,8 @@ config MAX_IRQ_PER_AGGREGATOR
 config NUM_IRQS
 	default 64
 
+choice CACHE_TYPE
+	default EXTERNAL_CACHE
+endchoice
+
 endif # SOC_SERIES_ANDES_AE350