diff --git a/Android.mk b/Android.mk
index 8e40e31..b91a4e0 100644
--- a/Android.mk
+++ b/Android.mk
@@ -1,3 +1,6 @@
+ifndef WPA_SUPPLICANT_VERSION
+WPA_SUPPLICANT_VERSION := VER_0_6_X
+endif
 ifeq ($(WPA_SUPPLICANT_VERSION),VER_0_6_X)
     include $(call all-subdir-makefiles)
 endif