diff --git a/projects/plugins/jetpack/changelog/fix-jetpack-comment-endpoint-warnings b/projects/plugins/jetpack/changelog/fix-jetpack-comment-endpoint-warnings
new file mode 100644
index 0000000000000..cd8d8e645371b
--- /dev/null
+++ b/projects/plugins/jetpack/changelog/fix-jetpack-comment-endpoint-warnings
@@ -0,0 +1,4 @@
+Significance: patch
+Type: bugfix
+
+REST API: Avoid PHP warnings in comment endpoint when the parent comment does not exist.
diff --git a/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-comment-endpoint.php b/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-comment-endpoint.php
index 73666bdceeebc..d7c12196f3287 100644
--- a/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-comment-endpoint.php
+++ b/projects/plugins/jetpack/json-endpoints/class.wpcom-json-api-comment-endpoint.php
@@ -185,8 +185,8 @@ public function get_comment( $comment_id, $context ) {
 					$response[ $key ] = (string) $status;
 					break;
 				case 'parent': // May be object or false.
-					if ( $comment->comment_parent ) {
-						$parent           = get_comment( $comment->comment_parent );
+					$parent = $comment->comment_parent ? get_comment( $comment->comment_parent ) : null;
+					if ( $parent ) {
 						$response[ $key ] = (object) array(
 							'ID'   => (int) $parent->comment_ID,
 							'type' => (string) ( $parent->comment_type ? $parent->comment_type : 'comment' ),