diff --git a/Android.mk b/Android.mk
index 713d082..6cb40c5 100644
--- a/Android.mk
+++ b/Android.mk
@@ -31,6 +31,7 @@
 LOCAL_SRC_FILES := \
     $(call all-java-files-under, src) \
     $(call all-java-files-under, src_config) \
+    $(call all-java-files-under, src_flags) \
     $(call all-proto-files-under, protos)
 
 LOCAL_RESOURCE_DIR := \