diff --git a/common_sensor_launch/launch/nebula_node_container.launch.py b/common_sensor_launch/launch/nebula_node_container.launch.py
index 3233263c..539fa967 100644
--- a/common_sensor_launch/launch/nebula_node_container.launch.py
+++ b/common_sensor_launch/launch/nebula_node_container.launch.py
@@ -266,8 +266,8 @@ def create_parameter_dict(*args):
         composable_node_descriptions=nodes,
         output="both",
         additional_env={
-            'LD_PRELOAD': 'libagnocast_heaphook.so',
-            'MEMPOOL_SIZE': '1073741824',  # 1GB
+            "LD_PRELOAD": f"libagnocast_heaphook.so:{os.getenv('LD_PRELOAD', '')}",
+            "MEMPOOL_SIZE": "1073741824",  # 1GB
         },
     )