diff --git a/Kbuild b/Kbuild
index c465cf7..ad31a2e 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2519,7 +2519,7 @@
 ccflags-$(CONFIG_HIF_SNOC) += -DCE_SVC_CMN_INIT
 
 ifeq ($(CONFIG_QCA6290_11AX), y)
-cppflags-y += -DQCA_WIFI_QCA6290_11AX
+cppflags-y += -DQCA_WIFI_QCA6290_11AX -DQCA_WIFI_QCA6290_11AX_MU_UL
 endif
 
 ifeq ($(CONFIG_LITHIUM), y)