diff --git a/lazy_player/thumbnailer.py b/lazy_player/thumbnailer.py
index a1b5e13..4f9b0c8 100644
--- a/lazy_player/thumbnailer.py
+++ b/lazy_player/thumbnailer.py
@@ -44,14 +44,14 @@ class Thumbnailer(ThreadPoolExecutor):
     def generate_thumbnail(self, file_item: FileItem):
         """Schedule thumbnail generation."""
 
-        if not file_item.full_path.is_file():
-            return
-
         if file_item.attempted_thumbnail.value:
             return
 
-        self.submit(generate_thumbnail_sync_nicely, file_item)
+        if not file_item.full_path.is_file():
+            return
+
         file_item.attempted_thumbnail.value = True
+        self.submit(generate_thumbnail_sync_nicely, file_item)
 
 
 def generate_thumbnail_sync_nicely(file_item: FileItem):