diff --git a/Kbuild b/Kbuild
index ccf3868..7947f14 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2558,6 +2558,8 @@
 cppflags-$(CONFIG_WMI_CONCURRENCY_SUPPORT) += -DWMI_CONCURRENCY_SUPPORT
 cppflags-$(CONFIG_WMI_STA_SUPPORT) += -DWMI_STA_SUPPORT
 
+cppflags-y += -DWMI_MULTI_MAC_SVC
+
 # Dummy flag for WIN/MCL converged data path compilation
 cppflags-y += -DDP_PRINT_ENABLE=0
 cppflags-y += -DATH_SUPPORT_WRAP=0