diff --git a/ci/long_running_tests/workloads/actor_deaths.py b/ci/long_running_tests/workloads/actor_deaths.py
index f3fd71949..5c03e34d0 100644
--- a/ci/long_running_tests/workloads/actor_deaths.py
+++ b/ci/long_running_tests/workloads/actor_deaths.py
@@ -15,7 +15,7 @@ num_nodes = 2
 message = ("Make sure there is enough memory on this machine to run this "
            "workload. We divide the system memory by 2 to provide a buffer.")
 assert (num_nodes * object_store_memory + num_redis_shards * redis_max_memory <
-        ray.utils.get_system_memory() / 2)
+        ray.utils.get_system_memory() / 2), message
 
 # Simulate a cluster on one machine.
 
diff --git a/ci/long_running_tests/workloads/many_drivers.py b/ci/long_running_tests/workloads/many_drivers.py
index 8154186cb..f8a0d04d3 100644
--- a/ci/long_running_tests/workloads/many_drivers.py
+++ b/ci/long_running_tests/workloads/many_drivers.py
@@ -14,7 +14,7 @@ num_nodes = 4
 message = ("Make sure there is enough memory on this machine to run this "
            "workload. We divide the system memory by 2 to provide a buffer.")
 assert (num_nodes * object_store_memory + num_redis_shards * redis_max_memory <
-        ray.utils.get_system_memory() / 2)
+        ray.utils.get_system_memory() / 2), message
 
 # Simulate a cluster on one machine.
 
diff --git a/ci/long_running_tests/workloads/many_tasks.py b/ci/long_running_tests/workloads/many_tasks.py
index 3daba67ea..562d2112e 100644
--- a/ci/long_running_tests/workloads/many_tasks.py
+++ b/ci/long_running_tests/workloads/many_tasks.py
@@ -15,7 +15,7 @@ num_nodes = 10
 message = ("Make sure there is enough memory on this machine to run this "
            "workload. We divide the system memory by 2 to provide a buffer.")
 assert (num_nodes * object_store_memory + num_redis_shards * redis_max_memory <
-        ray.utils.get_system_memory() / 2)
+        ray.utils.get_system_memory() / 2), message
 
 # Simulate a cluster on one machine.
 
diff --git a/ci/long_running_tests/workloads/many_tasks_serialized_ids.py b/ci/long_running_tests/workloads/many_tasks_serialized_ids.py
index 02830b065..27a42ce10 100644
--- a/ci/long_running_tests/workloads/many_tasks_serialized_ids.py
+++ b/ci/long_running_tests/workloads/many_tasks_serialized_ids.py
@@ -18,7 +18,7 @@ num_nodes = 10
 message = ("Make sure there is enough memory on this machine to run this "
            "workload. We divide the system memory by 2 to provide a buffer.")
 assert (num_nodes * object_store_memory + num_redis_shards * redis_max_memory <
-        ray.utils.get_system_memory() / 2)
+        ray.utils.get_system_memory() / 2), message
 
 # Simulate a cluster on one machine.