diff --git a/website/source/docs/jobspec/index.html.md b/website/source/docs/jobspec/index.html.md
index a36b9d569..67e6bd130 100644
--- a/website/source/docs/jobspec/index.html.md
+++ b/website/source/docs/jobspec/index.html.md
@@ -176,7 +176,7 @@ The `job` object supports the following keys:
 *   `periodic` - `periodic` allows the job to be scheduled at fixed times, dates
     or intervals. The periodic expression is always evaluated in the UTC
     timezone to ensure consistent evaluation when Nomad Servers span multiple
-    time zones. The `periodic` block supports the following keys:
+    time zones. The `periodic` block is optional and supports the following keys:
 
     * `enabled` - `enabled` determines whether the periodic job will spawn child
     jobs. `enabled` is defaulted to true if the block is included.
diff --git a/website/source/docs/jobspec/json.html.md b/website/source/docs/jobspec/json.html.md
index e68644694..9300fb303 100644
--- a/website/source/docs/jobspec/json.html.md
+++ b/website/source/docs/jobspec/json.html.md
@@ -210,7 +210,7 @@ The `Job` object supports the following keys:
 *   `Periodic` - `Periodic` allows the job to be scheduled at fixed times, dates
     or intervals. The periodic expression is always evaluated in the UTC
     timezone to ensure consistent evaluation when Nomad Servers span multiple
-    time zones. The `Periodic` object supports the following attributes:
+    time zones. The `Periodic` object is optional and supports the following attributes:
 
     * `Enabled` - `Enabled` determines whether the periodic job will spawn child
     jobs.