diff --git a/discord/embeds.py b/discord/embeds.py
index 41f2be40..52d71ef4 100644
--- a/discord/embeds.py
+++ b/discord/embeds.py
@@ -465,7 +465,7 @@ class Embed:
     @thumbnail.deleter
     def thumbnail(self):
         try:
-            del self.thumbnail
+            del self._thumbnail
         except AttributeError:
             pass