diff --git a/sb3tosb2.py b/sb3tosb2.py
index a43ae0d..556db56 100644
--- a/sb3tosb2.py
+++ b/sb3tosb2.py
@@ -1971,7 +1971,7 @@ def addMonitor(self, m):
             else:
                 if m['spriteName'] not in self.lists:
                     self.lists[m['spriteName']] = {}
-                    self.lists[m['spriteName']][monitor['listName']] = listData
+                self.lists[m['spriteName']][monitor['listName']] = listData
 
         else: