diff --git a/modules/core.py b/modules/core.py
index 3ec1617..db64f37 100644
--- a/modules/core.py
+++ b/modules/core.py
@@ -74,7 +74,7 @@ def parse_args() -> None:
         modules.globals.fp_ui['face_enhancer'] = True
     else:
         modules.globals.fp_ui['face_enhancer'] = False
-    
+
     modules.globals.nsfw = False
 
     # translate deprecated args
@@ -165,7 +165,6 @@ def update_status(message: str, scope: str = 'DLC.CORE') -> None:
     if not modules.globals.headless:
         ui.update_status(message)
 
-
 def start() -> None:
     for frame_processor in get_frame_processors_modules(modules.globals.frame_processors):
         if not frame_processor.pre_start():
diff --git a/modules/ui.py b/modules/ui.py
index 1d0bb69..ab18e95 100644
--- a/modules/ui.py
+++ b/modules/ui.py
@@ -61,11 +61,11 @@ def create_root(start: Callable[[], None], destroy: Callable[[], None]) -> ctk.C
     target_label = ctk.CTkLabel(root, text=None)
     target_label.place(relx=0.6, rely=0.1, relwidth=0.3, relheight=0.25)
 
-    source_button = ctk.CTkButton(root, text='Select a face', cursor='hand2', command=lambda: select_source_path())
-    source_button.place(relx=0.1, rely=0.4, relwidth=0.3, relheight=0.1)
+    select_face_button = ctk.CTkButton(root, text='Select a face', cursor='hand2', command=lambda: select_source_path())
+    select_face_button.place(relx=0.1, rely=0.4, relwidth=0.3, relheight=0.1)
 
-    target_button = ctk.CTkButton(root, text='Select a target', cursor='hand2', command=lambda: select_target_path())
-    target_button.place(relx=0.6, rely=0.4, relwidth=0.3, relheight=0.1)
+    select_target_button = ctk.CTkButton(root, text='Select a target', cursor='hand2', command=lambda: select_target_path())
+    select_target_button.place(relx=0.6, rely=0.4, relwidth=0.3, relheight=0.1)
 
     keep_fps_value = ctk.BooleanVar(value=modules.globals.keep_fps)
     keep_fps_checkbox = ctk.CTkSwitch(root, text='Keep fps', variable=keep_fps_value, cursor='hand2', command=lambda: setattr(modules.globals, 'keep_fps', not modules.globals.keep_fps))
@@ -253,7 +253,7 @@ def webcam_preview():
     if modules.globals.source_path is None:
         # No image selected
         return
-    
+
     global preview_label, PREVIEW
 
     cap = cv2.VideoCapture(0)  # Use index for the webcam (adjust the index accordingly if necessary)    
@@ -292,5 +292,8 @@ def webcam_preview():
         preview_label.configure(image=image)
         ROOT.update()
 
+        if PREVIEW.state() == 'withdrawn':
+            break
+
     cap.release()
-    PREVIEW.withdraw()  # Close preview window when loop is finished
\ No newline at end of file
+    PREVIEW.withdraw()  # Close preview window when loop is finished