diff --git a/tools/Android.mk b/tools/Android.mk
index 8f1acc5..91b2fbb 100644
--- a/tools/Android.mk
+++ b/tools/Android.mk
@@ -12,6 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-LOCAL_PATH := $(call my-dir)
-
-include $(call all-makefiles-under,$(LOCAL_PATH))
+include $(call all-subdir-makefiles)