diff --git a/src/com/android/settings/notification/ZenModeSettings.java b/src/com/android/settings/notification/ZenModeSettings.java
index 88df549d478..1d5f09ebe4d 100644
--- a/src/com/android/settings/notification/ZenModeSettings.java
+++ b/src/com/android/settings/notification/ZenModeSettings.java
@@ -18,16 +18,14 @@ package com.android.settings.notification;
 
 import android.app.NotificationManager;
 import android.app.NotificationManager.Policy;
+import android.content.Context;
 import android.os.Bundle;
+import android.support.annotation.VisibleForTesting;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.PreferenceScreen;
-import android.view.Menu;
-import android.view.MenuInflater;
-import android.view.MenuItem;
 
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
-import com.android.settings.SettingsActivity;
 
 public class ZenModeSettings extends ZenModeSettingsBase {
     private static final String KEY_PRIORITY_SETTINGS = "priority_settings";
@@ -80,25 +78,25 @@ public class ZenModeSettings extends ZenModeSettingsBase {
 
     private void updatePrioritySettingsSummary() {
         String s = getResources().getString(R.string.zen_mode_alarms);
-        s = appendLowercase(s, isCategoryEnabled(mPolicy, Policy.PRIORITY_CATEGORY_REMINDERS),
+        s = append(s, isCategoryEnabled(mPolicy, Policy.PRIORITY_CATEGORY_REMINDERS),
                 R.string.zen_mode_reminders);
-        s = appendLowercase(s, isCategoryEnabled(mPolicy, Policy.PRIORITY_CATEGORY_EVENTS),
+        s = append(s, isCategoryEnabled(mPolicy, Policy.PRIORITY_CATEGORY_EVENTS),
                 R.string.zen_mode_events);
         if (isCategoryEnabled(mPolicy, Policy.PRIORITY_CATEGORY_MESSAGES)) {
             if (mPolicy.priorityMessageSenders == Policy.PRIORITY_SENDERS_ANY) {
-                s = appendLowercase(s, true, R.string.zen_mode_all_messages);
+                s = append(s, true, R.string.zen_mode_all_messages);
             } else {
-                s = appendLowercase(s, true, R.string.zen_mode_selected_messages);
+                s = append(s, true, R.string.zen_mode_selected_messages);
             }
         }
         if (isCategoryEnabled(mPolicy, Policy.PRIORITY_CATEGORY_CALLS)) {
             if (mPolicy.priorityCallSenders == Policy.PRIORITY_SENDERS_ANY) {
-                s = appendLowercase(s, true, R.string.zen_mode_all_callers);
+                s = append(s, true, R.string.zen_mode_all_callers);
             } else {
-                s = appendLowercase(s, true, R.string.zen_mode_selected_callers);
+                s = append(s, true, R.string.zen_mode_selected_callers);
             }
         } else if (isCategoryEnabled(mPolicy, Policy.PRIORITY_CATEGORY_REPEAT_CALLERS)) {
-            s = appendLowercase(s, true, R.string.zen_mode_repeat_callers);
+            s = append(s, true, R.string.zen_mode_repeat_callers);
         }
         mPrioritySettings.setSummary(s);
     }
@@ -124,10 +122,11 @@ public class ZenModeSettings extends ZenModeSettingsBase {
         return (policy.priorityCategories & categoryType) != 0;
     }
 
-    private String appendLowercase(String s, boolean condition, int resId) {
+    @VisibleForTesting
+    String append(String s, boolean condition, int resId) {
         if (condition) {
-            return getResources().getString(R.string.join_many_items_middle, s,
-                    getResources().getString(resId).toLowerCase());
+            final Context context = getContext();
+            return context.getString(R.string.join_many_items_middle, s, context.getString(resId));
         }
         return s;
     }
diff --git a/tests/robotests/src/com/android/settings/notification/ZenModeSettingsTest.java b/tests/robotests/src/com/android/settings/notification/ZenModeSettingsTest.java
new file mode 100644
index 00000000000..40cfed54ead
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/notification/ZenModeSettingsTest.java
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+package com.android.settings.notification;
+
+import android.content.Context;
+
+import com.android.settings.R;
+import com.android.settings.SettingsRobolectricTestRunner;
+import com.android.settings.TestConfig;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.robolectric.RuntimeEnvironment;
+import org.robolectric.annotation.Config;
+
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.doReturn;
+import static org.mockito.Mockito.spy;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+@Config(manifest = TestConfig.MANIFEST_PATH, sdk = TestConfig.SDK_VERSION)
+public class ZenModeSettingsTest {
+
+    private ZenModeSettings mSettings;
+    private Context mContext;
+
+    @Before
+    public void setUp() {
+        mContext = RuntimeEnvironment.application.getApplicationContext();
+        mSettings = spy(ZenModeSettings.class);
+        doReturn(mContext).when(mSettings).getContext();
+    }
+
+    @Test
+    public void testAppend_conditionFalse_shouldNotAppend() {
+        String original = "test";
+
+        final String result = mSettings.append(original, false, R.string.zen_mode_alarms);
+
+        assertThat(result).isEqualTo(original);
+    }
+
+    @Test
+    public void testAppend_conditionTrue_shouldAppend() {
+        String original = "test";
+        String alarm = mContext.getString(R.string.zen_mode_alarms);
+
+        final String result = mSettings.append(original, true, R.string.zen_mode_alarms);
+
+        assertThat(result).contains(alarm);
+    }
+
+}