diff --git a/assets/icon.png b/assets/icon.png
new file mode 100644
index 0000000..47f6876
Binary files /dev/null and b/assets/icon.png differ
diff --git a/source/survey/WebMission.py b/source/survey/WebMission.py
index 84695ba..2238c95 100644
--- a/source/survey/WebMission.py
+++ b/source/survey/WebMission.py
@@ -10,7 +10,6 @@ from source import assets_path
 from source.survey.base import BaseSurvey
 from source.widget import Browser
 
-
 page_success_path: Path = assets_path / "web/success.html"
 
 
@@ -170,20 +169,22 @@ class WebMission(BaseSurvey):
         self.timer_check.stop()
 
     def _success(self):
-        if not self._finished:
-            # mark the success in the events
-            self._save_event(type="check")
-
-            # emit on the success signal
-            if "success" in self.signals:
-                self.signals["success"].emit()  # NOQA: emit exist
-
-            # change the content of the page to the success message
-            self.browser.web.load(QUrl.fromLocalFile(str(page_success_path.absolute())))
+        if self._finished:
+            return
 
         # mark the mission as finished
         self._finished = True
 
+        # mark the success in the events
+        self._save_event(type="check")
+
+        # emit on the success signal
+        if "success" in self.signals:
+            self.signals["success"].emit()  # NOQA: emit exist
+
+        # change the content of the page to the success message
+        self.browser.web.load(QUrl.fromLocalFile(str(page_success_path.absolute())))
+
     # condition
 
     def check(self) -> None:
diff --git a/source/widget/MyMainWindow.py b/source/widget/MyMainWindow.py
index 738a5ad..c123363 100644
--- a/source/widget/MyMainWindow.py
+++ b/source/widget/MyMainWindow.py
@@ -1,10 +1,15 @@
+from PyQt6.QtGui import QIcon
 from PyQt6.QtWidgets import QMainWindow
 
-from source import widget
+from source import widget, assets_path
+
+
+icon_path = assets_path / "icon.png"
 
 
 class MyMainWindow(QMainWindow):
     def __init__(self):
         super().__init__()
 
+        self.setWindowIcon(QIcon(str(icon_path.resolve())))
         self.setCentralWidget(widget.FrameSurvey("./surveys.json"))