diff --git a/gui.py b/gui.py
index 6e0ef92..70169da 100755
--- a/gui.py
+++ b/gui.py
@@ -514,7 +514,8 @@ class DocumentWindow(QMainWindow):
                         if b.chord:
                             if b.chord.name == oldName:
                                 b.chord = None
-            self.window.blockTableView.populate(self.currentSection.blockList)
+            if self.currentSection.blockList is not None:
+                self.window.blockTableView.populate(self.currentSection.blockList)
             self.clearChordLineEdits()
             self.updateChordDict()