diff --git a/conf/spark-defaults.conf.template b/conf/spark-defaults.conf.template
index a48dcc70e1363..252de39f828dd 100644
--- a/conf/spark-defaults.conf.template
+++ b/conf/spark-defaults.conf.template
@@ -1,4 +1,4 @@
-# Default system properties included when running spark-submit.
+# Default system properties included when running spark-submit or spark-shell.
 # This is useful for setting default environmental settings.
 
 # Example: