diff --git a/main/astrodatagui/AstrodataGUI.py b/main/astrodatagui/AstrodataGUI.py
index 50beb29..746f029 100644
--- a/main/astrodatagui/AstrodataGUI.py
+++ b/main/astrodatagui/AstrodataGUI.py
@@ -21,6 +21,7 @@ class AstrodataGUI(QtWidgets.QMainWindow):
 
         self.btAddNew.clicked.connect(self.addNewClicked)
         self.listDownloaded.itemClicked.connect(self.starSelected)
+        self.listSequences.setSelectionMode(QtWidgets.QAbstractItemView.ExtendedSelection)
         self.listSequences.itemClicked.connect(self.sequenceSelected)
 
         self.cbPlotNormalizeEnable.stateChanged.connect(self.plotOptionsCBChecked)