diff --git a/updater_sample/Android.mk b/updater_sample/Android.mk
index a5deee1..7662111 100644
--- a/updater_sample/Android.mk
+++ b/updater_sample/Android.mk
@@ -20,8 +20,9 @@
 LOCAL_PACKAGE_NAME := SystemUpdaterSample
 LOCAL_MODULE_TAGS := samples
 LOCAL_SDK_VERSION := system_current
-LOCAL_PRIVILEGED_MODULE := true
-LOCAL_PROGUARD_FLAG_FILES := proguard.flags
+
+# TODO: enable proguard and use proguard.flags file
+LOCAL_PROGUARD_ENABLED := disabled
 
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 
diff --git a/updater_sample/proguard.flags b/updater_sample/proguard.flags
deleted file mode 100644
index 5883608..0000000
--- a/updater_sample/proguard.flags
+++ /dev/null
@@ -1,23 +0,0 @@
-# Copyright (C) 2018 The Android Open Source Project
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#      http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-# Keep, used in tests.
--keep public class com.example.android.systemupdatersample.UpdateManager {
-   public int getUpdaterState();
-}
-
-# Keep, used in tests.
--keep public class com.example.android.systemupdatersample.UpdateConfig {
-   public <init>(java.lang.String, java.lang.String, int);
-}
diff --git a/updater_sample/tests/Android.mk b/updater_sample/tests/Android.mk
index 4157604..9aec372 100644
--- a/updater_sample/tests/Android.mk
+++ b/updater_sample/tests/Android.mk
@@ -22,10 +22,10 @@
 LOCAL_MODULE_TAGS := tests
 LOCAL_JAVA_LIBRARIES := \
     android.test.base.stubs \
-    android.test.runner.stubs
-LOCAL_STATIC_JAVA_LIBRARIES := android-support-test \
-    mockito-target-minus-junit4 \
+    android.test.runner.stubs \
     guava
+LOCAL_STATIC_JAVA_LIBRARIES := android-support-test \
+    mockito-target-minus-junit4
 LOCAL_INSTRUMENTATION_FOR := SystemUpdaterSample
 LOCAL_PROGUARD_ENABLED := disabled