diff --git a/src/com/android/launcher3/SettingsActivity.java b/src/com/android/launcher3/SettingsActivity.java
index 0902b20..b7b75f8 100644
--- a/src/com/android/launcher3/SettingsActivity.java
+++ b/src/com/android/launcher3/SettingsActivity.java
@@ -26,7 +26,6 @@
 import android.preference.PreferenceFragment;
 import android.provider.Settings;
 import android.provider.Settings.System;
-import android.support.v4.os.BuildCompat;
 
 import com.android.launcher3.graphics.IconShapeOverride;
 
@@ -85,7 +84,7 @@
             }
 
             Preference iconBadgingPref = findPreference(ICON_BADGING_PREFERENCE_KEY);
-            if (!BuildCompat.isAtLeastO()) {
+            if (!Utilities.isAtLeastO()) {
                 getPreferenceScreen().removePreference(
                         findPreference(SessionCommitReceiver.ADD_ICON_PREFERENCE_KEY));
                 getPreferenceScreen().removePreference(iconBadgingPref);
diff --git a/src/com/android/launcher3/Utilities.java b/src/com/android/launcher3/Utilities.java
index c2987f8..9100fe2 100644
--- a/src/com/android/launcher3/Utilities.java
+++ b/src/com/android/launcher3/Utilities.java
@@ -38,7 +38,6 @@
 import android.os.DeadObjectException;
 import android.os.PowerManager;
 import android.os.TransactionTooLargeException;
-import android.support.v4.os.BuildCompat;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.TextUtils;
@@ -86,7 +85,7 @@
     private static final Matrix sInverseMatrix = new Matrix();
 
     public static boolean isAtLeastO() {
-        return BuildCompat.isAtLeastO();
+        return Build.VERSION.SDK_INT >= Build.VERSION_CODES.O;
     }
 
     public static final boolean ATLEAST_NOUGAT_MR1 =
diff --git a/src/com/android/launcher3/notification/NotificationListener.java b/src/com/android/launcher3/notification/NotificationListener.java
index 8dca699..2d9c23e 100644
--- a/src/com/android/launcher3/notification/NotificationListener.java
+++ b/src/com/android/launcher3/notification/NotificationListener.java
@@ -24,8 +24,8 @@
 import android.service.notification.NotificationListenerService;
 import android.service.notification.StatusBarNotification;
 import android.support.annotation.Nullable;
-import android.support.v4.util.Pair;
 import android.text.TextUtils;
+import android.util.Pair;
 
 import com.android.launcher3.LauncherModel;
 import com.android.launcher3.config.FeatureFlags;
diff --git a/src/com/android/launcher3/widget/WidgetsBottomSheet.java b/src/com/android/launcher3/widget/WidgetsBottomSheet.java
index 5fe00c2..84a89c2 100644
--- a/src/com/android/launcher3/widget/WidgetsBottomSheet.java
+++ b/src/com/android/launcher3/widget/WidgetsBottomSheet.java
@@ -21,7 +21,6 @@
 import android.animation.ObjectAnimator;
 import android.content.Context;
 import android.graphics.Rect;
-import android.support.v4.view.animation.FastOutSlowInInterpolator;
 import android.util.AttributeSet;
 import android.view.ContextThemeWrapper;
 import android.view.Gravity;
@@ -29,6 +28,7 @@
 import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.animation.AnimationUtils;
 import android.view.animation.Interpolator;
 import android.widget.TextView;
 
@@ -81,7 +81,8 @@
         setWillNotDraw(false);
         mLauncher = Launcher.getLauncher(context);
         mOpenCloseAnimator = LauncherAnimUtils.ofPropertyValuesHolder(this);
-        mFastOutSlowInInterpolator = new FastOutSlowInInterpolator();
+        mFastOutSlowInInterpolator =
+                AnimationUtils.loadInterpolator(context, android.R.interpolator.fast_out_slow_in);
         mScrollInterpolator = new VerticalPullDetector.ScrollInterpolator();
         mInsets = new Rect();
         mVerticalPullDetector = new VerticalPullDetector(context);