diff --git a/pyqtgraph/flowchart/library/Data.py b/pyqtgraph/flowchart/library/Data.py
index 6edd3a80..b4d229ba 100644
--- a/pyqtgraph/flowchart/library/Data.py
+++ b/pyqtgraph/flowchart/library/Data.py
@@ -160,10 +160,9 @@ class RegionSelectNode(CtrlNode):
                 sliced = data[0:s['start']:s['stop']]
             else:
                 mask = (data['time'] >= s['start']) * (data['time'] < s['stop'])
-            sliced = data[mask]
+                sliced = data[mask]
         else:
             sliced = None
-            
         return {'selected': sliced, 'widget': self.items, 'region': region}