diff --git a/service_desk/handlers.py b/service_desk/handlers.py
index 84506c8..b4ac2d3 100644
--- a/service_desk/handlers.py
+++ b/service_desk/handlers.py
@@ -350,6 +350,7 @@ async def sd_module_handler(msg: Message):
             if "timer_task" in session and not session["timer_task"].done():
                 session["timer_task"].cancel()
             session["timer_task"] = asyncio.create_task(_wait_for_attachments_and_create(user_id, session))
+        session["timer_task"].add_done_callback(lambda t: _on_sd_timer_done(t, user_id))
             sd_workflow_logger.info(f"⏳ [SD] Timer started: waiting {ATTACHMENT_WAIT_TIMEOUT}s for potentially more attachments...")
             return
 
@@ -366,6 +367,7 @@ async def sd_module_handler(msg: Message):
             if "timer_task" in session and not session["timer_task"].done():
                 session["timer_task"].cancel()
             session["timer_task"] = asyncio.create_task(_wait_for_attachments_and_create(user_id, session))
+            session["timer_task"].add_done_callback(lambda t: _on_sd_timer_done(t, user_id))
             sd_workflow_logger.info(f"🔄 [SD] Timer reset due to user activity. Waiting another {ATTACHMENT_WAIT_TIMEOUT}s")
             return
 
@@ -404,3 +406,4 @@ async def sd_module_handler(msg: Message):
 
 
 
+