diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 12c4d49..78be986 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -8,7 +8,7 @@
         android:allowBackup="true"
         android:icon="@drawable/ic_launcher"
         android:label="@string/app_name"
-        android:theme="@style/Theme.AppCompat.Light" >
+        android:theme="@style/AppTheme">
         <activity
             android:configChanges="keyboardHidden|orientation|screenSize"
             android:name="xdsopl.robot36.MainActivity"
diff --git a/app/src/main/res/values-v21/styles.xml b/app/src/main/res/values-v21/styles.xml
deleted file mode 100644
index dba3c41..0000000
--- a/app/src/main/res/values-v21/styles.xml
+++ /dev/null
@@ -1,5 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-    <style name="AppTheme" parent="android:Theme.Material.Light">
-    </style>
-</resources>
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index ff6c9d2..766ab99 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -1,7 +1,7 @@
 <resources>
 
     <!-- Base application theme. -->
-    <style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
         <!-- Customize your theme here. -->
     </style>