diff --git a/graphs/gui/lists.py b/graphs/gui/lists.py
index bbcfcda311..d4c48e9072 100644
--- a/graphs/gui/lists.py
+++ b/graphs/gui/lists.py
@@ -141,7 +141,7 @@ def getWrapper(self, row):
         if row == -1:
             return None
         try:
-            return self.__wrappers[row]
+            return self.wrappers[row]
         except IndexError:
             return None