diff --git a/Kbuild b/Kbuild
index 7815cc6..3c5862c 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2819,6 +2819,7 @@
 cppflags-$(CONFIG_WLAN_FEATURE_11AX) += -DWLAN_FEATURE_11AX_BSS_COLOR
 cppflags-$(CONFIG_WLAN_FEATURE_11AX) += -DSUPPORT_11AX_D3
 cppflags-$(CONFIG_RXDMA_ERR_PKT_DROP) += -DRXDMA_ERR_PKT_DROP
+cppflags-$(CONFIG_MAX_ALLOC_PAGE_SIZE) += -DMAX_ALLOC_PAGE_SIZE
 
 cppflags-$(CONFIG_LITHIUM) += -DFEATURE_AST
 cppflags-$(CONFIG_LITHIUM) += -DPEER_PROTECTED_ACCESS