diff --git a/src/agents/result.py b/src/agents/result.py
index 5683827..6e806b7 100644
--- a/src/agents/result.py
+++ b/src/agents/result.py
@@ -216,5 +216,3 @@ class RunResultStreaming(RunResultBase):
 
         if self._output_guardrails_task and not self._output_guardrails_task.done():
             self._output_guardrails_task.cancel()
-            self._output_guardrails_task.cancel()
-            self._output_guardrails_task.cancel()