diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/PhotoVideoActivity.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/PhotoVideoActivity.kt
index c9c413caa..7c5338857 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/PhotoVideoActivity.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/pro/activities/PhotoVideoActivity.kt
@@ -133,6 +133,12 @@ open class PhotoVideoActivity : SimpleActivity(), ViewPagerFragment.FragmentList
             fragment_holder.background = ColorDrawable(Color.BLACK)
         }
 
+        if (config.maxBrightness) {
+            val attributes = window.attributes
+            attributes.screenBrightness = 1f
+            window.attributes = attributes
+        }
+
         window.decorView.setOnSystemUiVisibilityChangeListener { visibility ->
             val isFullscreen = visibility and View.SYSTEM_UI_FLAG_FULLSCREEN != 0
             mFragment?.fullscreenToggled(isFullscreen)