diff --git a/test_runner/regress/test_lfc_prewarm.py b/test_runner/regress/test_lfc_prewarm.py
index 1da87e96d3..372490eca1 100644
--- a/test_runner/regress/test_lfc_prewarm.py
+++ b/test_runner/regress/test_lfc_prewarm.py
@@ -140,6 +140,7 @@ def test_lfc_prewarm(neon_simple_env: NeonEnv, method: PrewarmMethod, grpc: bool
             config_lines=cfg,
             autoprewarm=True,
             offload_lfc_interval_seconds=AUTOOFFLOAD_INTERVAL_SECS,
+            grpc=grpc,
         )
     else:
         endpoint = env.endpoints.create_start(branch_name="main", config_lines=cfg, grpc=grpc)