diff --git a/examples/robobrain/conf/compress.yaml b/examples/robobrain/conf/compress.yaml
index 6a6bfa68a..ec0b8c6c2 100644
--- a/examples/robobrain/conf/compress.yaml
+++ b/examples/robobrain/conf/compress.yaml
@@ -10,6 +10,8 @@ experiment:
     entrypoint: flagscale/compress/compressor.py
   runner:
     hostfile: null
+    deploy:
+      use_fs_serve: true
   cmds:
     before_start: source activate flagscale-inference
   envs:
diff --git a/flagscale/runner/runner_base.py b/flagscale/runner/runner_base.py
index f1e526684..dc4dfd607 100644
--- a/flagscale/runner/runner_base.py
+++ b/flagscale/runner/runner_base.py
@@ -49,8 +49,10 @@ def __init__(self, config: DictConfig):
             backend_type = f"native_{self.task_type}"
             if self.config.experiment.runner.get(
                 "deploy", None
-            ) is None or self.config.experiment.runner.deploy.get("use_fs_serve", False):
-                raise ValueError("config.experiment.deploy.use_fs_serve in YAML should be true")
+            ) is None or not self.config.experiment.runner.deploy.get("use_fs_serve", False):
+                raise ValueError(
+                    "when backend type is native, config.experiment.deploy.use_fs_serve in YAML should be true"
+                )
 
         self.backend_type = backend_type