diff --git a/conf/spark-env.sh.template b/conf/spark-env.sh.template
index f906be611a931..330300c010ae5 100755
--- a/conf/spark-env.sh.template
+++ b/conf/spark-env.sh.template
@@ -38,6 +38,7 @@
 # - SPARK_WORKER_INSTANCES, to set the number of worker processes per node
 # - SPARK_WORKER_DIR, to set the working directory of worker processes
 # - SPARK_WORKER_OPTS, to set config properties only for the worker (e.g. "-Dx=y")
+# - SPARK_DRIVER_MEMORY, Memory for driver (e.g. 1000M, 2G) (Default: 512 Mb)
 # - SPARK_HISTORY_OPTS, to set config properties only for the history server (e.g. "-Dx=y")
 # - SPARK_DAEMON_OPTS, to set config properties for all daemons (e.g. "-Dx=y")
 # - SPARK_PUBLIC_DNS, to set the public dns name of the master or workers