diff --git a/dislocker_client.py b/dislocker_client.py
index f2933f9..79c5bd7 100644
--- a/dislocker_client.py
+++ b/dislocker_client.py
@@ -20,6 +20,7 @@ dislocker_dir = os.path.dirname(os.path.abspath(sys.argv[0]))
 
 os.chdir(dislocker_dir)
 
+resource_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), "resource")
 config_dir_path = "./config/"
 client_config_path = config_dir_path + "client.json"
 if not os.path.isfile(client_config_path):
@@ -70,6 +71,7 @@ class App(customtkinter.CTk):
     def __init__(self):
         super().__init__()
         self.title(f"{app_name} | ロック中")
+        self.iconbitmap(default=resource_path + '\\icon\\dislocker.ico')
         if client_config["testing"] == 1:
             pass
         else:
@@ -133,7 +135,6 @@ class App(customtkinter.CTk):
         print(unlock)
 
     def toast(self):
-        resource_path = os.path.join(os.path.dirname(os.path.realpath(__file__)), "resource")
         success = Notification(
             app_id='Dislocker',
             title='ご協力ありがとうございます!',
@@ -155,6 +156,7 @@ class Lock(customtkinter.CTkToplevel):
         else:
             self.title(f'{app_name} | PC番号 {client_config["pc_number"]} | ロックされています')
         
+        self.iconbitmap(default=resource_path + '\\icon\\dislocker.ico')
         self.window_width = 600
         self.window_height = 320
         self.screen_width = self.winfo_screenwidth()
@@ -335,7 +337,7 @@ class Help(customtkinter.CTkToplevel):
             self.title(f'{app_name} | ヘルプ | テストモード')
         else:
             self.title(f'{app_name} | ヘルプ')
-        self.iconbitmap("./resource/icon/dislocker.ico")
+        self.iconbitmap(default=resource_path + '\\icon\\dislocker.ico')
         self.geometry("600x400")
         self.resizable(height=False, width=False)
         self.attributes('-topmost', True)