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 9bbb7c875..1fc066316 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/activities/MainActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/activities/MainActivity.kt
@@ -43,7 +43,6 @@ class MainActivity : SimpleActivity(), DirectoryAdapter.DirOperationsListener {
     private val PICK_WALLPAPER = 3
     private val LAST_MEDIA_CHECK_PERIOD = 3000L
     private val NEW_APP_PACKAGE = "com.simplemobiletools.clock"
-    private val IS_PROTECTION_DIALOG_SHOWN = "is_protection_dialog_shown"
 
     private var mIsPickImageIntent = false
     private var mIsPickVideoIntent = false