diff --git a/release/scripts/modules/bpy/utils/previews.py b/release/scripts/modules/bpy/utils/previews.py
index bd6b6a0d304..965971139e4 100644
--- a/release/scripts/modules/bpy/utils/previews.py
+++ b/release/scripts/modules/bpy/utils/previews.py
@@ -112,7 +112,7 @@ class ImagePreviewCollection(dict):
         _uuid_open.remove(self._uuid)
 
     def __delitem__(self, key):
-        _utils_previews.release(self._gen_key(name))
+        _utils_previews.release(self._gen_key(key))
         super().__delitem__(key)
 
     def __repr__(self):
@@ -145,6 +145,7 @@ def remove(pcoll):
 # don't complain about resources on exit (only unregister)
 import atexit
 
+
 def exit_clear_warning():
     del ImagePreviewCollection.__del__