diff --git a/QtPyLoT.py b/QtPyLoT.py
index d2ff4839..5b0db609 100755
--- a/QtPyLoT.py
+++ b/QtPyLoT.py
@@ -962,6 +962,7 @@ class MainWindow(QMainWindow):
         if event.autopicks:
             self.autopicks = event.autopicks
             self.drawPicks(picktype='auto')
+            self.compare_action.setEnabled(True)
         self.draw()
 
     def clearWaveformDataPlot(self):