diff --git a/Kbuild b/Kbuild
index 1d13fe3..7e2409c 100644
--- a/Kbuild
+++ b/Kbuild
@@ -1932,6 +1932,8 @@
 cppflags-$(CONFIG_DP_LFR) += -DDP_LFR
 cppflags-$(CONFIG_HTT_PADDR64) += -DHTT_PADDR64
 
+ccflags-$(CONFIG_QCA_LL_TX_FLOW_CONTROL_RESIZE) += -DQCA_LL_TX_FLOW_CONTROL_RESIZE
+
 ifeq ($(CONFIG_QCA6290_11AX), y)
 cppflags-y += -DQCA_WIFI_QCA6290_11AX
 endif