diff --git a/adf/libadf/Android.bp b/adf/libadf/Android.bp
index 2b5461e..1a81a49 100644
--- a/adf/libadf/Android.bp
+++ b/adf/libadf/Android.bp
@@ -19,3 +19,5 @@
     local_include_dirs: ["include"],
     export_include_dirs: ["include"],
 }
+
+subdirs = ["tests"]
diff --git a/adf/libadf/tests/adf_test.cpp b/adf/libadf/tests/adf_test.cpp
index 01b2785..eaa9342 100644
--- a/adf/libadf/tests/adf_test.cpp
+++ b/adf/libadf/tests/adf_test.cpp
@@ -149,11 +149,13 @@
     int eng;
 
 private:
-    const static adf_id_t dev_id = 0;
+    const static adf_id_t dev_id;
     const static __u32 fmt8888[];
     const static size_t n_fmt8888;
 };
 
+const adf_id_t AdfTest::dev_id = 0;
+
 const __u32 AdfTest::fmt8888[] = {
    DRM_FORMAT_XRGB8888,
    DRM_FORMAT_XBGR8888,