diff --git a/Kbuild b/Kbuild
index d6b5fd2..62af178 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2284,6 +2284,7 @@
 cppflags-$(CONFIG_CONVERGED_P2P_ENABLE) += -DCONVERGED_P2P_ENABLE
 cppflags-$(CONFIG_WLAN_POLICY_MGR_ENABLE) += -DWLAN_POLICY_MGR_ENABLE
 cppflags-$(CONFIG_FEATURE_BLACKLIST_MGR) += -DFEATURE_BLACKLIST_MGR
+cppflags-$(CONFIG_WAPI_BIG_ENDIAN) += -DFEATURE_WAPI_BIG_ENDIAN
 cppflags-$(CONFIG_SUPPORT_11AX) += -DSUPPORT_11AX
 cppflags-$(CONFIG_HDD_INIT_WITH_RTNL_LOCK) += -DCONFIG_HDD_INIT_WITH_RTNL_LOCK
 cppflags-$(CONFIG_WLAN_CONV_SPECTRAL_ENABLE) += -DWLAN_CONV_SPECTRAL_ENABLE
diff --git a/configs/default_defconfig b/configs/default_defconfig
index cda2e89..4e2a148 100644
--- a/configs/default_defconfig
+++ b/configs/default_defconfig
@@ -650,6 +650,12 @@
 CONFIG_PKTLOG_LEGACY := n
 endif
 
+ifeq ($(CONFIG_LITHIUM), y)
+CONFIG_WAPI_BIG_ENDIAN := y
+else
+CONFIG_WAPI_BIG_ENDIAN := n
+endif
+
 #Enable WDI Event support
 ifeq ($(CONFIG_REMOVE_PKT_LOG), y)
 CONFIG_WDI_EVENT_ENABLE := n