diff --git a/device/config/chips/v851s/configs/fastboot_sl100_back/linux/config-4.9 b/device/config/chips/v851s/configs/fastboot_sl100_back/linux/config-4.9
index d92e47544..f8b4c52cb 100755
--- a/device/config/chips/v851s/configs/fastboot_sl100_back/linux/config-4.9
+++ b/device/config/chips/v851s/configs/fastboot_sl100_back/linux/config-4.9
@@ -50,7 +50,7 @@ CONFIG_KERNEL_LZ4=y
 CONFIG_DEFAULT_HOSTNAME="(none)"
 # CONFIG_SWAP is not set
 CONFIG_SYSVIPC=y
-# CONFIG_POSIX_MQUEUE is not set
+CONFIG_POSIX_MQUEUE=y
 CONFIG_CROSS_MEMORY_ATTACH=y
 # CONFIG_FHANDLE is not set
 # CONFIG_USELIB is not set