diff --git a/src/agents/run_internal/tool_actions.py b/src/agents/run_internal/tool_actions.py
index 005a0b163f..d7b93d3e9d 100644
--- a/src/agents/run_internal/tool_actions.py
+++ b/src/agents/run_internal/tool_actions.py
@@ -169,7 +169,11 @@ async def _run_action(span: Any | None) -> RunItem:
                         "image_url": image_url,
                     },
                     type="computer_call_output",
-                    acknowledged_safety_checks=acknowledged_safety_checks,
+                    **(
+                        {"acknowledged_safety_checks": acknowledged_safety_checks}
+                        if acknowledged_safety_checks is not None
+                        else {}
+                    ),
                 ),
             )