diff --git a/raven/plugins/logfile/filterwidget.py b/raven/plugins/logfile/filterwidget.py
index e3e0c44..f754633 100644
--- a/raven/plugins/logfile/filterwidget.py
+++ b/raven/plugins/logfile/filterwidget.py
@@ -136,6 +136,7 @@ class FilterWidget(QWidget):
 
     def destruct(self):
         # print("cleanup: ", self.tmpfilename)
+        self._cancel_search()
         os.remove(self.tmpfilename)
 
     def _cancel_search(self):