diff --git a/Orange/widgets/data/owpaintdata.py b/Orange/widgets/data/owpaintdata.py
index 650e7e20148..4cbd9be5f57 100644
--- a/Orange/widgets/data/owpaintdata.py
+++ b/Orange/widgets/data/owpaintdata.py
@@ -1226,6 +1226,9 @@ def invalidate(self):
         self.commit()
 
     def commit(self):
+        if len(self.data) == 0:
+            self.send("Data", None)
+            return
         if self.hasAttr2:
             X, Y = self.data[:, :2], self.data[:, 2]
             attrs = (Orange.data.ContinuousVariable(self.attr1),