diff --git a/src/matrix_applicationbot/classes/bot.py b/src/matrix_applicationbot/classes/bot.py
index f5c959a..763ce26 100644
--- a/src/matrix_applicationbot/classes/bot.py
+++ b/src/matrix_applicationbot/classes/bot.py
@@ -90,7 +90,9 @@ class ApplicationBot:
             await self.open_ticket(room, event.state_key)
 
     async def reaction_callback(self, room: MatrixRoom, event):
-        relation = event.content.get("m.relates_to", {})
+        logging.debug(f"Received reaction event: {event}")
+
+        relation = event.source["content"].get("m.relates_to", {})
         message_id = relation.get("event_id")
         key = relation.get("key")