diff --git a/benchmark/scripts/benchmark_in_batch.py b/benchmark/scripts/benchmark_in_batch.py
index 256db55dd0b..3f920718d2f 100644
--- a/benchmark/scripts/benchmark_in_batch.py
+++ b/benchmark/scripts/benchmark_in_batch.py
@@ -100,11 +100,11 @@
             j.command(f'mv {resource_task.ofile} benchmark-resources/{resource_group.name()}.tar')
             j.command(f'time tar -xf benchmark-resources/{resource_group.name()}.tar')
         j.command(
-            f'MKL_NUM_THREADS=1'
-            f'OPENBLAS_NUM_THREADS=1'
-            f'OMP_NUM_THREADS=1'
-            f'VECLIB_MAXIMUM_THREADS=1'
-            f'{benchmark_lower_env_var}'
+            f'MKL_NUM_THREADS=1 '
+            f'OPENBLAS_NUM_THREADS=1 '
+            f'OMP_NUM_THREADS=1 '
+            f'VECLIB_MAXIMUM_THREADS=1 '
+            f'{benchmark_lower_env_var} '
             f'PYSPARK_SUBMIT_ARGS="--driver-memory 6G pyspark-shell" '
             f'hail-bench run -o {j.ofile} -n {N_ITERS} --data-dir benchmark-resources -t {name}'
         )