diff --git a/br-ext-chip-sigmastar/board/infinity6e/infinity6e-ssc012b.config b/br-ext-chip-sigmastar/board/infinity6e/infinity6e-ssc012b.config
index b139f0d5..5d77ca48 100644
--- a/br-ext-chip-sigmastar/board/infinity6e/infinity6e-ssc012b.config
+++ b/br-ext-chip-sigmastar/board/infinity6e/infinity6e-ssc012b.config
@@ -1591,7 +1591,6 @@ CONFIG_USB_OHCI_LITTLE_ENDIAN=y
 CONFIG_USB_SUPPORT=y
 CONFIG_MP_USB_MSTAR=y
 CONFIG_USB_COMMON=y
-CONFIG_USB_ACM=y
 CONFIG_USB_ARCH_HAS_HCD=y
 CONFIG_USB=y
 CONFIG_USB_ANNOUNCE_NEW_DEVICES=y
@@ -1630,7 +1629,7 @@ CONFIG_USB_EHCI_TT_NEWSCHED=y
 #
 # USB Device Class drivers
 #
-# CONFIG_USB_ACM is not set
+CONFIG_USB_ACM=y
 # CONFIG_USB_PRINTER is not set
 # CONFIG_USB_WDM is not set
 # CONFIG_USB_TMC is not set