diff --git a/Orange/widgets/utils/itemmodels.py b/Orange/widgets/utils/itemmodels.py
index cbf708b8073..af4a28b4978 100644
--- a/Orange/widgets/utils/itemmodels.py
+++ b/Orange/widgets/utils/itemmodels.py
@@ -617,7 +617,7 @@ def flags(self, index):
         if isinstance(item, ContinuousPalette):
             return Qt.ItemIsEnabled | Qt.ItemIsSelectable
         else:
-            return Qt.ItemIsEnabled
+            return Qt.NoItemFlags
 
     def indexOf(self, x):
         if isinstance(x, str):