diff --git a/app/src/main/kotlin/com/simplemobiletools/gallery/extensions/context.kt b/app/src/main/kotlin/com/simplemobiletools/gallery/extensions/context.kt
index b62ec01f9..8905cca0b 100644
--- a/app/src/main/kotlin/com/simplemobiletools/gallery/extensions/context.kt
+++ b/app/src/main/kotlin/com/simplemobiletools/gallery/extensions/context.kt
@@ -52,7 +52,7 @@ fun Context.getParents(): ArrayList<String> {
     val uri = MediaStore.Files.getContentUri("external")
     val columns = arrayOf(MediaStore.Files.FileColumns.PARENT, MediaStore.Images.Media.DATA)
     val where = "${MediaStore.Images.Media.DATA} IS NOT NULL) GROUP BY (${MediaStore.Files.FileColumns.PARENT} "
-    val parentsSet = HashSet<String>()
+    val parentsSet = TreeSet<String>(String.CASE_INSENSITIVE_ORDER)
 
     var cursor: Cursor? = null
     try {