diff --git a/src/toil/batchSystems/lsf.py b/src/toil/batchSystems/lsf.py
index 5d44029af4..fe41cfb687 100644
--- a/src/toil/batchSystems/lsf.py
+++ b/src/toil/batchSystems/lsf.py
@@ -138,7 +138,7 @@ def coalesce_job_exit_codes(self, batch_job_id_list: list) -> list:
                 logger.debug("Getting coalesced job exit codes via bjobs")
                 bjobs_records = self.parseBjobs(
                     subprocess.run(
-                        args, check=False, stderr=subprocess.STDOUT, encoding="utf-8"
+                        args, check=False, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, encoding="utf-8"
                     ).stdout
                 )
                 if bjobs_records: