diff --git a/src/Object/File.php b/src/Object/File.php
index a6bfe7e..87f4c6b 100644
--- a/src/Object/File.php
+++ b/src/Object/File.php
@@ -82,7 +82,11 @@ final class File extends Item
                 $parent = substr($this->path, 0, $parentSep);
             } else $parent = '/';
             $this->parent = base64_encode($parent);
-            $this->isEditable = $editable[$extension] ?? false;
+            if ($editable[$extension] ?? false && $file->read() !== false) {
+                $this->isEditable = true;
+            } else {
+                $this->isEditable = false;
+            }
         }
     }