diff --git a/app/src/main/java/org/solovyev/android/calculator/AdView.java b/app/src/main/java/org/solovyev/android/calculator/AdView.java
index 82d6a893..7d769cb1 100644
--- a/app/src/main/java/org/solovyev/android/calculator/AdView.java
+++ b/app/src/main/java/org/solovyev/android/calculator/AdView.java
@@ -2,18 +2,19 @@ package org.solovyev.android.calculator;
 
 import android.content.Context;
 import android.util.AttributeSet;
-import android.view.LayoutInflater;
+import android.view.Gravity;
 import android.view.View;
 import android.widget.FrameLayout;
-
 import com.google.android.gms.ads.AdListener;
 import com.google.android.gms.ads.AdRequest;
-
-import org.solovyev.android.Check;
+import com.google.android.gms.ads.AdSize;
 
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
+import static android.view.ViewGroup.LayoutParams.MATCH_PARENT;
+import static android.view.ViewGroup.LayoutParams.WRAP_CONTENT;
+
 public class AdView extends FrameLayout {
 
     @Nullable
@@ -23,14 +24,22 @@ public class AdView extends FrameLayout {
 
     public AdView(Context context) {
         super(context);
+        init();
     }
 
     public AdView(Context context, AttributeSet attrs) {
         super(context, attrs);
+        init();
     }
 
     public AdView(Context context, AttributeSet attrs, int defStyle) {
         super(context, attrs, defStyle);
+        init();
+    }
+
+    private void init() {
+        setVisibility(GONE);
+        setId(R.id.cpp_ad);
     }
 
     public void destroy() {
@@ -66,13 +75,7 @@ public class AdView extends FrameLayout {
             return;
         }
 
-        LayoutInflater.from(getContext()).inflate(R.layout.admob, this);
-        admobView = (com.google.android.gms.ads.AdView) findViewById(R.id.admob);
-        Check.isNotNull(admobView);
-        if (admobView == null) {
-            return;
-        }
-
+        admobView = addAdmobView();
         admobListener = new AdView.AdViewListener(this);
         admobView.setAdListener(admobListener);
 
@@ -85,6 +88,18 @@ public class AdView extends FrameLayout {
         admobView.loadAd(b.build());
     }
 
+    @Nonnull
+    private com.google.android.gms.ads.AdView addAdmobView() {
+        final com.google.android.gms.ads.AdView v = new com.google.android.gms.ads.AdView(getContext());
+        v.setVisibility(GONE);
+        v.setAdSize(AdSize.BANNER);
+        v.setAdUnitId(getResources().getString(R.string.admob));
+        final LayoutParams lp = new LayoutParams(MATCH_PARENT, WRAP_CONTENT);
+        lp.gravity = Gravity.CENTER;
+        addView(v, lp);
+        return v;
+    }
+
     public void hide() {
         if (admobView == null) {
             return;
diff --git a/app/src/main/java/org/solovyev/android/calculator/ads/AdUi.java b/app/src/main/java/org/solovyev/android/calculator/ads/AdUi.java
index c364cf24..57902b21 100644
--- a/app/src/main/java/org/solovyev/android/calculator/ads/AdUi.java
+++ b/app/src/main/java/org/solovyev/android/calculator/ads/AdUi.java
@@ -24,7 +24,7 @@ public class AdUi {
     @NonNull
     private final Handler handler;
     @Nullable
-    @Bind(R.id.ad)
+    @Bind(R.id.cpp_ad)
     AdView adView;
     @Nullable
     private Boolean adFree = null;
diff --git a/app/src/main/java/org/solovyev/android/calculator/preferences/PreferencesFragment.java b/app/src/main/java/org/solovyev/android/calculator/preferences/PreferencesFragment.java
index ede0ab26..45ea65d3 100644
--- a/app/src/main/java/org/solovyev/android/calculator/preferences/PreferencesFragment.java
+++ b/app/src/main/java/org/solovyev/android/calculator/preferences/PreferencesFragment.java
@@ -7,15 +7,9 @@ import android.os.Bundle;
 import android.preference.ListPreference;
 import android.preference.Preference;
 import android.util.SparseArray;
-import android.view.LayoutInflater;
 import android.view.View;
 import android.widget.ListView;
-
-import org.solovyev.android.calculator.AdView;
-import org.solovyev.android.calculator.App;
-import org.solovyev.android.calculator.Engine;
-import org.solovyev.android.calculator.Preferences;
-import org.solovyev.android.calculator.R;
+import org.solovyev.android.calculator.*;
 import org.solovyev.android.calculator.language.Language;
 import org.solovyev.android.calculator.language.Languages;
 import org.solovyev.android.checkout.BillingRequests;
@@ -23,10 +17,9 @@ import org.solovyev.android.checkout.Checkout;
 import org.solovyev.android.checkout.ProductTypes;
 import org.solovyev.android.checkout.RequestListener;
 
-import java.util.List;
-
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
+import java.util.List;
 
 import static org.solovyev.android.calculator.wizard.CalculatorWizards.DEFAULT_WIZARD_FLOW;
 import static org.solovyev.android.wizard.WizardUi.startWizard;
@@ -212,7 +205,7 @@ public class PreferencesFragment extends org.solovyev.android.material.preferenc
             if (adView != null) {
                 return;
             }
-            adView = (AdView) LayoutInflater.from(getActivity()).inflate(R.layout.ad, null);
+            adView = new AdView(getActivity());
             adView.show();
             try {
                 listView.addHeaderView(adView);
diff --git a/app/src/main/res/layout/ad.xml b/app/src/main/res/layout/ad.xml
deleted file mode 100644
index 0a046d96..00000000
--- a/app/src/main/res/layout/ad.xml
+++ /dev/null
@@ -1,31 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<!--
-  ~ Copyright 2013 serso aka se.solovyev
-  ~
-  ~ 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.
-  ~
-  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-  ~ Contact details
-  ~
-  ~ Email: se.solovyev@gmail.com
-  ~ Site:  http://se.solovyev.org
-  -->
-
-<org.solovyev.android.calculator.AdView
-    xmlns:a="http://schemas.android.com/apk/res/android"
-    a:id="@+id/ad"
-    a:layout_width="match_parent"
-    a:layout_height="wrap_content"
-    a:layout_gravity="center"
-    a:visibility="gone" />
diff --git a/app/src/main/res/layout/admob.xml b/app/src/main/res/layout/admob.xml
deleted file mode 100644
index 0dd0235e..00000000
--- a/app/src/main/res/layout/admob.xml
+++ /dev/null
@@ -1,34 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-
-<!--
-  ~ Copyright 2013 serso aka se.solovyev
-  ~
-  ~ 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.
-  ~
-  ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-  ~ Contact details
-  ~
-  ~ Email: se.solovyev@gmail.com
-  ~ Site:  http://se.solovyev.org
-  -->
-
-<com.google.android.gms.ads.AdView
-    xmlns:a="http://schemas.android.com/apk/res/android"
-    xmlns:ads="http://schemas.android.com/apk/res-auto"
-    a:id="@+id/admob"
-    a:layout_width="match_parent"
-    a:layout_height="wrap_content"
-    a:layout_gravity="center"
-    a:visibility="gone"
-    ads:adSize="BANNER"
-    ads:adUnitId="@string/admob" />
diff --git a/app/src/main/res/layout/cpp_plot_fragment.xml b/app/src/main/res/layout/cpp_plot_fragment.xml
index db473f00..acc73f65 100644
--- a/app/src/main/res/layout/cpp_plot_fragment.xml
+++ b/app/src/main/res/layout/cpp_plot_fragment.xml
@@ -29,7 +29,6 @@
     a:layout_width="match_parent"
     a:layout_height="match_parent">
 
-    <include layout="@layout/ad" />
-
+    <org.solovyev.android.calculator.AdView style="@style/CppAd" />
 
 </LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/cpp_plot_function_settings_fragment.xml b/app/src/main/res/layout/cpp_plot_function_settings_fragment.xml
index 3d4931ee..50a524a5 100644
--- a/app/src/main/res/layout/cpp_plot_function_settings_fragment.xml
+++ b/app/src/main/res/layout/cpp_plot_function_settings_fragment.xml
@@ -31,7 +31,7 @@
     a:layout_gravity="center_horizontal"
     a:orientation="vertical">
 
-    <include layout="@layout/ad" />
+    <org.solovyev.android.calculator.AdView style="@style/CppAd" />
 
     <TextView
         a:layout_width="match_parent"
diff --git a/app/src/main/res/layout/cpp_plot_functions_fragment.xml b/app/src/main/res/layout/cpp_plot_functions_fragment.xml
index 2b96a479..966d6343 100644
--- a/app/src/main/res/layout/cpp_plot_functions_fragment.xml
+++ b/app/src/main/res/layout/cpp_plot_functions_fragment.xml
@@ -29,7 +29,7 @@
     a:layout_width="match_parent"
     a:layout_height="match_parent">
 
-    <include layout="@layout/ad" />
+    <org.solovyev.android.calculator.AdView style="@style/CppAd" />
 
     <LinearLayout
         a:layout_width="match_parent"
diff --git a/app/src/main/res/layout/cpp_plot_range_fragment.xml b/app/src/main/res/layout/cpp_plot_range_fragment.xml
index 5810348c..b2121afa 100644
--- a/app/src/main/res/layout/cpp_plot_range_fragment.xml
+++ b/app/src/main/res/layout/cpp_plot_range_fragment.xml
@@ -31,7 +31,7 @@
     a:layout_gravity="center_horizontal"
     a:orientation="vertical">
 
-    <include layout="@layout/ad" />
+    <org.solovyev.android.calculator.AdView style="@style/CppAd" />
 
     <LinearLayout
         a:layout_width="match_parent"
diff --git a/app/src/main/res/layout/cpp_plotter_fragment.xml b/app/src/main/res/layout/cpp_plotter_fragment.xml
index 07ee94fc..dc74f392 100644
--- a/app/src/main/res/layout/cpp_plotter_fragment.xml
+++ b/app/src/main/res/layout/cpp_plotter_fragment.xml
@@ -29,7 +29,7 @@
     a:layout_width="match_parent"
     a:layout_height="match_parent">
 
-    <include layout="@layout/ad" />
+    <org.solovyev.android.calculator.AdView style="@style/CppAd" />
 
     <org.solovyev.android.plotter.PlotView
         a:id="@+id/plotview"
diff --git a/app/src/main/res/layout/fragment_entities.xml b/app/src/main/res/layout/fragment_entities.xml
index b6ec97ef..41f8f48c 100644
--- a/app/src/main/res/layout/fragment_entities.xml
+++ b/app/src/main/res/layout/fragment_entities.xml
@@ -29,7 +29,7 @@
     a:layout_width="match_parent"
     a:layout_height="match_parent">
 
-    <include layout="@layout/ad" />
+    <org.solovyev.android.calculator.AdView style="@style/CppAd" />
 
     <FrameLayout
         a:layout_width="match_parent"
diff --git a/app/src/main/res/layout/fragment_history.xml b/app/src/main/res/layout/fragment_history.xml
index 4f73f1f1..c78558e2 100644
--- a/app/src/main/res/layout/fragment_history.xml
+++ b/app/src/main/res/layout/fragment_history.xml
@@ -29,7 +29,7 @@
     a:layout_width="match_parent"
     a:layout_height="match_parent">
 
-    <include layout="@layout/ad" />
+    <org.solovyev.android.calculator.AdView style="@style/CppAd" />
 
     <FrameLayout
         a:layout_width="match_parent"
diff --git a/app/src/main/res/layout/matrix_edit_fragment.xml b/app/src/main/res/layout/matrix_edit_fragment.xml
index 803ad840..028d2d4b 100644
--- a/app/src/main/res/layout/matrix_edit_fragment.xml
+++ b/app/src/main/res/layout/matrix_edit_fragment.xml
@@ -37,7 +37,7 @@
         a:layout_width="match_parent"
         a:layout_height="wrap_content" />
 
-    <include layout="@layout/ad" />
+    <org.solovyev.android.calculator.AdView style="@style/CppAd" />
 
     <LinearLayout
         a:layout_width="match_parent"
diff --git a/app/src/main/res/values/ids.xml b/app/src/main/res/values/ids.xml
index 8170c0b1..c40436a7 100644
--- a/app/src/main/res/values/ids.xml
+++ b/app/src/main/res/values/ids.xml
@@ -21,6 +21,7 @@
   -->
 
 <resources>
+    <item name="cpp_ad" type="id" />
     <item name="cpp_button_1" type="id" />
     <item name="cpp_button_2" type="id" />
     <item name="cpp_button_3" type="id" />
diff --git a/app/src/main/res/values/styles.xml b/app/src/main/res/values/styles.xml
index a7e6c91e..1f37e30b 100644
--- a/app/src/main/res/values/styles.xml
+++ b/app/src/main/res/values/styles.xml
@@ -349,6 +349,13 @@
         <item name="backgroundSplit">@color/cpp_material_actionbar_light</item>
     </style>
 
+    <style name="CppAd">
+        <item name="android:layout_width">match_parent</item>
+        <item name="android:layout_height">wrap_content</item>
+        <item name="android:layout_gravity">center</item>
+        <item name="android:visibility">gone</item>
+    </style>
+
     <dimen name="list_item_text_size">16sp</dimen>
     <dimen name="list_item_text_size_small">14sp</dimen>
 </resources>
\ No newline at end of file