diff --git a/Lib/pickle.py b/Lib/pickle.py
--- a/Lib/pickle.py
+++ b/Lib/pickle.py
@@ -1209,6 +1209,17 @@
     def load_appends(self):
         stack = self.stack
         mark = self.marker()
+        obj = stack[mark - 1]
+        items = stack[mark + 1:]
+        if isinstance(obj, list):
+            obj.extend(items)
+        else:
+            for item in items:
+                obj.append(item)
+
+    def load_appends(self):
+        stack = self.stack
+        mark = self.marker()
         list = stack[mark - 1]
         list.extend(stack[mark + 1:])
         del stack[mark:]