diff --git a/flair/nn/model.py b/flair/nn/model.py
index 2fa90714c..2e77d67d3 100644
--- a/flair/nn/model.py
+++ b/flair/nn/model.py
@@ -660,7 +660,7 @@ def multi_label_threshold(self):
 
     @multi_label_threshold.setter
     def multi_label_threshold(self, x):  # setter method
-        if type(x) is dict:
+        if isinstance(x, dict):
             if "default" in x:
                 self._multi_label_threshold = x
             else: