diff --git a/proprietary/Android.mk b/proprietary/Android.mk
index 5053e7d6..a3b671c2 100644
--- a/proprietary/Android.mk
+++ b/proprietary/Android.mk
@@ -1 +1,6 @@
+# widevine prebuilts only available for ARM
+ifeq ($(TARGET_ARCH),arm)
+
 include $(call all-subdir-makefiles)
+
+endif # TARGET_ARCH == arm