diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/activities/MainActivity.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/activities/MainActivity.kt
index 15d2878a6..97f6fd081 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/activities/MainActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/activities/MainActivity.kt
@@ -5,6 +5,7 @@ import android.app.Activity
 import android.content.Intent
 import android.content.pm.PackageManager
 import android.net.Uri
+import android.os.AsyncTask
 import android.os.Bundle
 import android.provider.MediaStore
 import android.support.v4.app.ActivityCompat
@@ -175,7 +176,7 @@ class MainActivity : SimpleActivity(), DirectoryAdapter.DirOperationsListener {
         mCurrAsyncTask = GetDirectoriesAsynctask(applicationContext, mIsPickVideoIntent || mIsGetVideoContentIntent, mIsPickImageIntent || mIsGetImageContentIntent) {
             gotDirectories(it)
         }
-        mCurrAsyncTask!!.execute()
+        mCurrAsyncTask!!.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR)
     }
 
     private fun showSortingDialog() {
diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/activities/MediaActivity.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/activities/MediaActivity.kt
index e6eb87e39..d9bfd91e0 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/activities/MediaActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/activities/MediaActivity.kt
@@ -5,6 +5,7 @@ import android.app.WallpaperManager
 import android.content.Intent
 import android.graphics.Bitmap
 import android.net.Uri
+import android.os.AsyncTask
 import android.os.Bundle
 import android.support.v7.widget.GridLayoutManager
 import android.util.Log
@@ -230,7 +231,7 @@ class MediaActivity : SimpleActivity(), MediaAdapter.MediaOperationsListener {
         mCurrAsyncTask = GetMediaAsynctask(applicationContext, mPath, mIsGetVideoIntent, mIsGetImageIntent, mShowAll) {
             gotMedia(it)
         }
-        mCurrAsyncTask!!.execute()
+        mCurrAsyncTask!!.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR)
     }
 
     private fun isDirEmpty(): Boolean {
diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt
index 7169d878b..77742d17e 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/activities/ViewPagerActivity.kt
@@ -11,6 +11,7 @@ import android.graphics.Matrix
 import android.hardware.SensorManager
 import android.media.ExifInterface
 import android.net.Uri
+import android.os.AsyncTask
 import android.os.Build
 import android.os.Bundle
 import android.provider.MediaStore
@@ -414,7 +415,7 @@ class ViewPagerActivity : SimpleActivity(), ViewPager.OnPageChangeListener, View
             invalidateOptionsMenu()
             checkOrientation()
         }
-        mCurrAsyncTask!!.execute()
+        mCurrAsyncTask!!.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR)
     }
 
     private fun getProperPosition(): Int {