diff --git a/CHANGELOG.md b/CHANGELOG.md
index f2944049b..c720140c0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
+### Fixed
+- Fixed unhiding a file whose name is only dots deleting it ([#517])
 
 ## [1.6.3] - 2026-10-20
 ### Changed
@@ -145,6 +147,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 [#250]: https://github.com/FossifyOrg/File-Manager/issues/250
 [#251]: https://github.com/FossifyOrg/File-Manager/issues/251
 [#267]: https://github.com/FossifyOrg/File-Manager/issues/267
+[#517]: https://github.com/FossifyOrg/File-Manager/issues/517
 
 [Unreleased]: https://github.com/FossifyOrg/File-Manager/compare/1.6.3...HEAD
 [1.6.3]: https://github.com/FossifyOrg/File-Manager/compare/1.6.2...1.6.3
diff --git a/app/src/main/kotlin/org/fossify/filemanager/extensions/Activity.kt b/app/src/main/kotlin/org/fossify/filemanager/extensions/Activity.kt
index 82603c18f..8f8e9a1be 100644
--- a/app/src/main/kotlin/org/fossify/filemanager/extensions/Activity.kt
+++ b/app/src/main/kotlin/org/fossify/filemanager/extensions/Activity.kt
@@ -76,6 +76,13 @@ fun BaseSimpleActivity.toggleItemVisibility(oldPath: String, hide: Boolean, call
         filename.substring(1, filename.length)
     }
 
+    // Unhiding "..." or "." would produce ".." or ".", which name the parent folder or the
+    // current one, so the rename fails and the file is lost. Leave such names as they are.
+    if (filename.isEmpty() || filename == "." || filename == "..") {
+        callback?.invoke(oldPath)
+        return
+    }
+
     val newPath = "$path/$filename"
     if (oldPath != newPath) {
         renameFile(oldPath, newPath, false) { success, useAndroid30Way ->