diff --git a/root/target/linux/mediatek/mt7623/config-4.14 b/root/target/linux/mediatek/mt7623/config-4.14
index b849c9d6..0fe0cbff 100644
--- a/root/target/linux/mediatek/mt7623/config-4.14
+++ b/root/target/linux/mediatek/mt7623/config-4.14
@@ -57,7 +57,6 @@ CONFIG_ATAGS_PROC=y
 CONFIG_AUTO_ZRELADDR=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_BLK_MQ_PCI=y
-CONFIG_BOUNCE=y
 # CONFIG_CACHE_L2X0 is not set
 CONFIG_CC_STACKPROTECTOR=y
 # CONFIG_CC_STACKPROTECTOR_NONE is not set
@@ -271,7 +270,7 @@ CONFIG_HAVE_SMP=y
 CONFIG_HAVE_SYSCALL_TRACEPOINTS=y
 CONFIG_HAVE_UID16=y
 CONFIG_HAVE_VIRT_CPU_ACCOUNTING_GEN=y
-CONFIG_HIGHMEM=y
+# CONFIG_HIGHMEM is not set
 # CONFIG_HIGHPTE is not set
 CONFIG_HOTPLUG_CPU=y
 CONFIG_HWMON=y
@@ -444,6 +443,7 @@ CONFIG_PCI_MSI=y
 CONFIG_PCI_MSI_IRQ_DOMAIN=y
 CONFIG_PERF_USE_VMALLOC=y
 CONFIG_PGTABLE_LEVELS=2
+CONFIG_PGTABLE_MAPPING=y
 CONFIG_PHYLIB=y
 CONFIG_PHY_MTK_TPHY=y
 CONFIG_PINCTRL=y
@@ -564,3 +564,5 @@ CONFIG_ZBOOT_ROM_BSS=0
 CONFIG_ZBOOT_ROM_TEXT=0
 CONFIG_ZLIB_DEFLATE=y
 CONFIG_ZLIB_INFLATE=y
+CONFIG_ZSMALLOC=y
+# CONFIG_ZSMALLOC_STAT is not set
\ No newline at end of file