diff --git a/src/soc/intel/cannonlake/Kconfig b/src/soc/intel/cannonlake/Kconfig
index 00aa6e9ac8..e45fe20fc4 100644
--- a/src/soc/intel/cannonlake/Kconfig
+++ b/src/soc/intel/cannonlake/Kconfig
@@ -110,7 +110,7 @@ config IED_REGION_SIZE
 
 config MAX_ROOT_PORTS
 	int
-	default 24
+	default 16
 
 config SMM_TSEG_SIZE
 	hex