diff --git a/library/src/main/java/com/anthonycr/grant/PermissionsManager.java b/library/src/main/java/com/anthonycr/grant/PermissionsManager.java
index d218c69..22822a0 100644
--- a/library/src/main/java/com/anthonycr/grant/PermissionsManager.java
+++ b/library/src/main/java/com/anthonycr/grant/PermissionsManager.java
@@ -1,11 +1,13 @@
 package com.anthonycr.grant;
 
 import android.Manifest;
+import android.annotation.TargetApi;
 import android.app.Activity;
 import android.content.Context;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.os.Build;
+import android.provider.Settings;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.support.v4.app.ActivityCompat;
@@ -342,6 +344,7 @@ private void doPermissionWorkBeforeAndroidM(@NonNull Activity activity,
      *                    permission check
      * @return a list of permissions names that are not granted yet
      */
+    @TargetApi(Build.VERSION_CODES.M)
     @NonNull
     private List<String> getPermissionsListToRequest(@NonNull Activity activity,
                                                      @NonNull String[] permissions,
@@ -352,6 +355,16 @@ private List<String> getPermissionsListToRequest(@NonNull Activity activity,
                 if (action != null) {
                     action.onResult(perm, Permissions.NOT_FOUND);
                 }
+            } else if (Manifest.permission.SYSTEM_ALERT_WINDOW.equals(perm)) {
+                if (Settings.canDrawOverlays(activity)) {
+                    if (action != null) {
+                        action.onResult(perm, Permissions.GRANTED);
+                    }
+                } else {
+                    if (!mPendingRequests.contains(perm)) {
+                        permList.add(perm);
+                    }
+                }
             } else if (ActivityCompat.checkSelfPermission(activity, perm) != PackageManager.PERMISSION_GRANTED) {
                 if (!mPendingRequests.contains(perm)) {
                     permList.add(perm);