diff --git a/src/ert/scheduler/lsf_driver.py b/src/ert/scheduler/lsf_driver.py
index e2c85829dbc..267bc07a09c 100644
--- a/src/ert/scheduler/lsf_driver.py
+++ b/src/ert/scheduler/lsf_driver.py
@@ -109,7 +109,9 @@ async def submit(
         self, iens: int, executable: str, /, *args: str, cwd: str, job_name: str
     ) -> None:
         await self.run_with_retries(
-            lambda: self._submit_once(iens, executable, cwd=cwd, job_name=job_name),
+            lambda: self._submit_once(
+                iens, executable, *args, cwd=cwd, job_name=job_name
+            ),
             error_msg="Maximum number of submit errors exceeded",
         )
 
@@ -121,33 +123,43 @@ async def _submit_once(
             "-J",
             job_name,
             executable,
+            *args,
         ]
+        print(f"setting up bsub process {bsub_with_args}")
         process = await asyncio.create_subprocess_exec(
             *bsub_with_args,
             cwd=cwd,
             stdout=asyncio.subprocess.PIPE,
             stderr=asyncio.subprocess.PIPE,
         )
-        job_id, stderr = await process.communicate()
+        print("communicate bsub process")
+        print(" ".join(bsub_with_args))
+        stdout, stderr = await process.communicate()
+        print("bsub done")
         try:
-            job_id_ = (
-                job_id.decode("utf-8")
+            job_id = (
+                stdout.decode("utf-8")
                 .strip()
                 .replace("<", "")
                 .replace(">", "")
                 .split()[1]
             )
         except IndexError as err:
+            print(
+                f"Command \"{' '.join(bsub_with_args)}\" failed with error message: {stderr.decode()}"
+            )
             logger.error(
                 f"Command \"{' '.join(bsub_with_args)}\" failed with error message: {stderr.decode()}"
             )
             raise RuntimeError from err
 
+        print(f"got {job_id=}")
         (Path(cwd) / LSF_JSON).write_text(
-            json.dumps({"job_id": job_id_}), encoding="utf-8"
+            json.dumps({"job_id": job_id}), encoding="utf-8"
         )
-        self._jobs[job_id_] = (iens, _JobState.PEND)
-        self._iens2jobid[iens] = job_id_
+        self._jobs[job_id] = (iens, _JobState.PEND)
+        self._iens2jobid[iens] = job_id
+        print("done in lsf.submit()")
 
     async def kill(self, iens: int) -> None:
         try:
diff --git a/tests/integration_tests/scheduler/mock_lsf_bin/bkill.py b/tests/integration_tests/scheduler/mock_lsf_bin/bkill.py
index eb234e4928a..92f28667337 100644
--- a/tests/integration_tests/scheduler/mock_lsf_bin/bkill.py
+++ b/tests/integration_tests/scheduler/mock_lsf_bin/bkill.py
@@ -21,7 +21,8 @@ def main() -> None:
         if not pidfile.exists():
             print("fixme, job did not exist")  # verify_me
             sys.exit(1)  # verify_me
-        pid = int(pidfile.read_text(encoding="utf-8"))
+        pid = int(pidfile.read_text(encoding="utf-8").strip())
+        print(f"{pidfile=} {pid=}")
         os.kill(pid, killsignal)
         pidfile.unlink()
         print(f"killed a job={pid} with {killsignal=}")  # verify with actual bkill
diff --git a/tests/integration_tests/scheduler/mock_lsf_bin/bsub b/tests/integration_tests/scheduler/mock_lsf_bin/bsub
index e3c952dc89f..ecddcc8d56d 100755
--- a/tests/integration_tests/scheduler/mock_lsf_bin/bsub
+++ b/tests/integration_tests/scheduler/mock_lsf_bin/bsub
@@ -1,2 +1,3 @@
 #!/usr/bin/env bash
-exec "${PYTHON:-$(which python3)}" "$(dirname $0)/bsub.py" "$@"
+exec "${PYTHON:-$(which python3)}" "$(dirname $0)/bsub.py" "$@" &
+disown -a
diff --git a/tests/integration_tests/scheduler/mock_lsf_bin/bsub.py b/tests/integration_tests/scheduler/mock_lsf_bin/bsub.py
index ed2533eb899..4dd32d30260 100644
--- a/tests/integration_tests/scheduler/mock_lsf_bin/bsub.py
+++ b/tests/integration_tests/scheduler/mock_lsf_bin/bsub.py
@@ -9,7 +9,7 @@ def get_parser() -> argparse.ArgumentParser:
     parser = argparse.ArgumentParser(description="Submit jobs to Slurm via LSF syntax")
 
     parser.add_argument("-J", "--job_name", type=str)
-    parser.add_argument("shellcode", type=str)
+    parser.add_argument("shellcode", type=str, nargs="+")
     return parser
 
 
@@ -22,7 +22,7 @@ def main() -> None:
     )  # todo: ensure not in use to avoid flakyness
     jobdir.mkdir(exist_ok=True, parents=True)
 
-    (jobdir / f"{jobid}.script").write_text(args.shellcode)
+    (jobdir / f"{jobid}.script").write_text(" ".join(args.shellcode))
     (jobdir / f"{jobid}.name").write_text(args.job_name or "no_name")
     print(f"Job <{jobid}> is submitted to default queue <normal>.")
 
diff --git a/tests/integration_tests/scheduler/mock_lsf_bin/runner b/tests/integration_tests/scheduler/mock_lsf_bin/runner
index 1fa4926005b..85aaa164d60 100755
--- a/tests/integration_tests/scheduler/mock_lsf_bin/runner
+++ b/tests/integration_tests/scheduler/mock_lsf_bin/runner
@@ -5,14 +5,17 @@ function handle_sigterm {
     # Torque uses (256 + SIGNAL) as the returncode
     # Fix this to whatever LSF does..
     # SIGTERM=15
-    echo "Caught sigterm"
     echo "271" > "${job}.returncode"
+    kill $child_pid
     exit 0
 }
 
 trap handle_sigterm SIGTERM
 
 echo "$$" > "${job}.pid"
-sh "${job}.script" > "${job}.stdout" 2> "${job}.stderr"
+sh "${job}.script" > "${job}.stdout" 2> "${job}.stderr" &
+child_pid=$!
+wait
+
 echo "runner finished sh code"
 echo "$?" > "${job}.returncode"
diff --git a/tests/integration_tests/scheduler/test_lsf_driver.py b/tests/integration_tests/scheduler/test_lsf_driver.py
index 2353004379f..ff5604ff50e 100644
--- a/tests/integration_tests/scheduler/test_lsf_driver.py
+++ b/tests/integration_tests/scheduler/test_lsf_driver.py
@@ -26,7 +26,9 @@ def mock_lsf(pytestconfig, monkeypatch, tmp_path):
 async def test_submit_poll_and_kill():
     driver = LsfDriver()
     iens: int = 0
-    await driver.submit(iens, "sleep 100", cwd=".", job_name="_")
+    print("sutmibbint")
+    await driver.submit(iens, "sleep", "100", cwd=".", job_name="_")
+    print("submit done awaited")
     assert iens in driver._iens2jobid
     jobid = driver._iens2jobid[iens]
     assert driver._jobs[jobid] == (iens, "PEND")