diff --git a/sklearn/ensemble/_forest.py b/sklearn/ensemble/_forest.py
index 82f5378d9d07b..d56a5e9856872 100644
--- a/sklearn/ensemble/_forest.py
+++ b/sklearn/ensemble/_forest.py
@@ -894,6 +894,9 @@ def predict_log_proba(self, X):
 
             return proba
 
+    def _more_tags(self):
+        return {"multilabel": True}
+
 
 class ForestRegressor(RegressorMixin, BaseForest, metaclass=ABCMeta):
     """
diff --git a/sklearn/neural_network/_multilayer_perceptron.py b/sklearn/neural_network/_multilayer_perceptron.py
index ce57d7376665a..35ccb83a658ba 100644
--- a/sklearn/neural_network/_multilayer_perceptron.py
+++ b/sklearn/neural_network/_multilayer_perceptron.py
@@ -6,7 +6,6 @@
 #          Jiyuan Qian
 # License: BSD 3 clause
 
-from tkinter.tix import Tree
 import numpy as np
 
 from abc import ABCMeta, abstractmethod
@@ -1252,7 +1251,7 @@ def predict_proba(self, X):
             return y_pred
 
     def _more_tags(self):
-        return {"multilabel": Tree}
+        return {"multilabel": True}
 
 
 class MLPRegressor(RegressorMixin, BaseMultilayerPerceptron):