diff --git a/Kbuild b/Kbuild
index 6d24af4..aaf203f 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2813,6 +2813,7 @@
 cppflags-$(CONFIG_HTT_PADDR64) += -DHTT_PADDR64
 cppflags-$(CONFIG_OL_RX_INDICATION_RECORD) += -DOL_RX_INDICATION_RECORD
 cppflags-$(CONFIG_TSOSEG_DEBUG) += -DTSOSEG_DEBUG
+cppflags-$(CONFIG_ALLOW_PKT_DROPPING) += -DFEATURE_ALLOW_PKT_DROPPING
 
 cppflags-$(CONFIG_ENABLE_DEBUG_ADDRESS_MARKING) += -DENABLE_DEBUG_ADDRESS_MARKING
 cppflags-$(CONFIG_FEATURE_TSO) += -DFEATURE_TSO