diff --git a/aqt/addcards.py b/aqt/addcards.py
index 3dcf46184..dd1de4d43 100644
--- a/aqt/addcards.py
+++ b/aqt/addcards.py
@@ -190,6 +190,7 @@ question on all cards."""), help="AddItems")
         saveGeom(self, "add")
         aqt.dialogs.close("AddCards")
         QDialog.reject(self)
+        self.deleteLater()
 
     def canClose(self):
         if (self.forceClose or self.editor.fieldsAreBlank() or
diff --git a/aqt/browser.py b/aqt/browser.py
index e81d620df..dcd1603c3 100644
--- a/aqt/browser.py
+++ b/aqt/browser.py
@@ -471,6 +471,7 @@ class Browser(QMainWindow):
         self.teardownHooks()
         self.mw.maybeReset()
         evt.accept()
+        self.deleteLater()
 
     def canClose(self):
         return True
diff --git a/aqt/editcurrent.py b/aqt/editcurrent.py
index c029fc36e..cb8d69067 100644
--- a/aqt/editcurrent.py
+++ b/aqt/editcurrent.py
@@ -64,6 +64,7 @@ class EditCurrent(QDialog):
         self.mw.moveToState("review")
         saveGeom(self, "editcurrent")
         aqt.dialogs.close("EditCurrent")
+        self.deleteLater()
 
     def canClose(self):
         return True
diff --git a/aqt/stats.py b/aqt/stats.py
index 93bf6601a..b7c6e0c54 100644
--- a/aqt/stats.py
+++ b/aqt/stats.py
@@ -45,6 +45,7 @@ class DeckStats(QDialog):
     def reject(self):
         saveGeom(self, self.name)
         QDialog.reject(self)
+        self.deleteLater()
 
     def browser(self):
         name = time.strftime("-%Y-%m-%d@%H-%M-%S.png",