diff --git a/Kbuild b/Kbuild
index 46119eb..964a514 100644
--- a/Kbuild
+++ b/Kbuild
@@ -2437,6 +2437,16 @@
 endif
 endif
 
+#Define Max IPA interface
+ifeq ($(CONFIG_IPA_OFFLOAD), y)
+ifdef CONFIG_NUM_IPA_IFACE
+cppflags-y += -DMAX_IPA_IFACE=$(CONFIG_NUM_IPA_IFACE)
+else
+NUM_IPA_IFACE ?= 3
+cppflags-y += -DMAX_IPA_IFACE=$(NUM_IPA_IFACE)
+endif
+endif
+
 cppflags-$(CONFIG_TUFELLO_DUAL_FW_SUPPORT) += -DCONFIG_TUFELLO_DUAL_FW_SUPPORT
 cppflags-$(CONFIG_CHANNEL_HOPPING_ALL_BANDS) += -DCHANNEL_HOPPING_ALL_BANDS