diff --git a/.buildkite/run-neuron-test.sh b/.buildkite/run-neuron-test.sh
index 9b978365ce793..aa29c434e7cfb 100644
--- a/.buildkite/run-neuron-test.sh
+++ b/.buildkite/run-neuron-test.sh
@@ -27,8 +27,8 @@ if [ -f /tmp/neuron-docker-build-timestamp ]; then
     if [ $((current_time - last_build)) -gt 86400 ]; then
         docker image prune -f
         docker system prune -f
-        rm -rf "${HF_MOUNT}/*"
-        rm -rf "${NEURON_COMPILE_CACHE_MOUNT}/*"
+        rm -rf "${HF_MOUNT:?}/*"
+        rm -rf "${NEURON_COMPILE_CACHE_MOUNT:?}/*"
         echo "$current_time" > /tmp/neuron-docker-build-timestamp
     fi
 else
diff --git a/examples/offline_inference_neuron.py b/examples/offline_inference_neuron.py
index 9079c44a68242..f098c8e5fed1e 100644
--- a/examples/offline_inference_neuron.py
+++ b/examples/offline_inference_neuron.py
@@ -1,5 +1,3 @@
-import os
-
 from vllm import LLM, SamplingParams
 
 # Sample prompts.