diff --git a/components/event_store/service/event_logger.py b/components/event_store/service/event_logger.py
index e998365..1834e14 100644
--- a/components/event_store/service/event_logger.py
+++ b/components/event_store/service/event_logger.py
@@ -45,7 +45,7 @@ class EventLogger:
         @param index: 0 for most recent
         """
         key = self.redis.lindex(key, index)
-        return key.decode() if key else json.dump("")
+        return key.decode() if key else json.dumps("")
 
     def log(self, msg):
         try: