diff --git a/android/Android.bp b/android/Android.bp
index 977345b..1627e9c 100644
--- a/android/Android.bp
+++ b/android/Android.bp
@@ -39,6 +39,7 @@
         "paths.go",
         "phony.go",
         "prebuilt.go",
+        "prebuilt_build_tool.go",
         "proto.go",
         "register.go",
         "rule_builder.go",