diff --git a/examples/spark/images/driver/start.sh b/examples/spark/images/driver/start.sh
index 495194dc38b..696c4dc644a 100755
--- a/examples/spark/images/driver/start.sh
+++ b/examples/spark/images/driver/start.sh
@@ -5,5 +5,5 @@ echo "SPARK_LOCAL_HOSTNAME=$(hostname -i)" >> /opt/spark/conf/spark-env.sh
 echo "MASTER=spark://spark-master:$SPARK_MASTER_SERVICE_PORT" >> /opt/spark/conf/spark-env.sh
 
 while true; do
-sleep 100
+  sleep 100
 done