diff --git a/api/routes/conversations.py b/api/routes/conversations.py
index 2da7c7b..7f39928 100644
--- a/api/routes/conversations.py
+++ b/api/routes/conversations.py
@@ -20,14 +20,13 @@ def list_conversations(
     result = []
     for conv in convs:
         last_msg = conv.messages[-1] if conv.messages else None
+        contact_id = conv.participants[0].id if conv.participants else None
         result.append(
             ConversationResponse(
-                **{
-                    c.key: getattr(conv, c.key)
-                    for c in conv.__table__.columns
-                },
+                **{c.key: getattr(conv, c.key) for c in conv.__table__.columns},
                 last_message=MessageResponse.model_validate(last_msg) if last_msg else None,
                 unread_count=conversation_service.unread_count(db, conv.id),
+                contact_id=contact_id,
             )
         )
     return result
@@ -43,10 +42,12 @@ def get_conversation(
     if not conv:
         raise HTTPException(status_code=404, detail="Conversation not found")
     last_msg = conv.messages[-1] if conv.messages else None
+    contact_id = conv.participants[0].id if conv.participants else None
     return ConversationResponse(
         **{c.key: getattr(conv, c.key) for c in conv.__table__.columns},
         last_message=MessageResponse.model_validate(last_msg) if last_msg else None,
         unread_count=conversation_service.unread_count(db, conv.id),
+        contact_id=contact_id,
     )
 
 
diff --git a/schemas.py b/schemas.py
index 6638a3f..fd38970 100644
--- a/schemas.py
+++ b/schemas.py
@@ -111,6 +111,7 @@ class ConversationResponse(BaseModel):
     created_at: datetime
     last_message: Optional[MessageResponse] = None
     unread_count: int = 0
+    contact_id: Optional[str] = None
 
 
 # ── Channel Status ─────────────────────────────────────────────────────────────
diff --git a/tui/screens/main_screen.py b/tui/screens/main_screen.py
index 1849098..0cb511f 100644
--- a/tui/screens/main_screen.py
+++ b/tui/screens/main_screen.py
@@ -289,17 +289,14 @@ class MainScreen(Screen):
         asyncio.create_task(self._generate_telegram_qr())
 
     async def _generate_telegram_qr(self) -> None:
-        if not self._current_conv:
+        if not self._current_conv_id:
             self.notify("Bitte erst eine Konversation auswählen.", severity="warning")
             return
-        conv = self._current_conv
-        if conv.get("channel") != "telegram":
-            self.notify("QR-Code nur für Telegram-Konversationen.", severity="warning")
-            return
+        conv = self._current_conv or {}
         contact_id = conv.get("contact_id")
         if not contact_id:
             try:
-                details = await self._api.get_conversation(conv["id"])
+                details = await self._api.get_conversation(self._current_conv_id)
                 contact_id = (details or {}).get("contact_id")
             except Exception:
                 pass