diff --git a/addons/web/static/src/legacy/js/core/dialog.js b/addons/web/static/src/legacy/js/core/dialog.js
index 7cef878b1bc..1fdf50de198 100644
--- a/addons/web/static/src/legacy/js/core/dialog.js
+++ b/addons/web/static/src/legacy/js/core/dialog.js
@@ -195,6 +195,9 @@ var Dialog = Widget.extend({
 
         var self = this;
         this.appendTo($('<div/>')).then(function () {
+            if (self.isDestroyed()) {
+                return;
+            }
             self.$modal.find(".modal-body").replaceWith(self.$el);
             self.$modal.attr('open', true);
             self.$modal.removeAttr("aria-hidden");
diff --git a/addons/web/static/tests/legacy/core/dialog_tests.js b/addons/web/static/tests/legacy/core/dialog_tests.js
index abb1cb43251..3c83b2ba3b0 100644
--- a/addons/web/static/tests/legacy/core/dialog_tests.js
+++ b/addons/web/static/tests/legacy/core/dialog_tests.js
@@ -158,6 +158,16 @@ QUnit.module('core', {}, function () {
 
         parent.destroy();
     });
+
+    QUnit.test("Should not be displayed if parent is destroyed while dialog is being opened", async function (assert) {
+        assert.expect(1);
+        const parent = await createEmptyParent();
+        const dialog = new Dialog(parent);
+        dialog.open();
+        parent.destroy();
+        await testUtils.nextTick();
+        assert.containsNone(document.body, ".modal[role='dialog']");
+    });
 });
 
 });