diff --git a/openfl/component/collaborator/collaborator.py b/openfl/component/collaborator/collaborator.py
index b327cd9117..54683135d5 100644
--- a/openfl/component/collaborator/collaborator.py
+++ b/openfl/component/collaborator/collaborator.py
@@ -179,7 +179,7 @@ def run(self):
                     # This is the place to check the memory usage of the collaborator
                     memory_detail = get_memory_usage()
                     memory_detail["round_number"] = round_number
-                    memory_details["metric_origin"] = self.collaborator_name
+                    memory_detail["metric_origin"] = self.collaborator_name
                     memory_details.append(memory_detail)
         if self.log_memory_usage:
             self.logger.info(f"Publish memory usage: {memory_details}")