diff --git a/scripts/ImportJSON/Code.gs b/scripts/ImportJSON/Code.gs
index b830a48..5785a18 100644
--- a/scripts/ImportJSON/Code.gs
+++ b/scripts/ImportJSON/Code.gs
@@ -58,6 +58,7 @@
  * @param {url}          the URL to a public JSON feed
  * @param {query}        a comma-separated list of paths to import. Any path starting with one of these paths gets imported.
  * @param {parseOptions} a comma-separated list of options that alter processing of the data
+ * @customfunction
  *
  * @return a two-dimensional array containing the data, with the first row containing headers
  **/
@@ -101,6 +102,7 @@ function ImportJSON(url, query, parseOptions) {
  * @param {fetchOptions} a comma-separated list of options used to retrieve the JSON feed from the URL
  * @param {query}        a comma-separated list of paths to import. Any path starting with one of these paths gets imported.
  * @param {parseOptions} a comma-separated list of options that alter processing of the data
+ * @customfunction
  *
  * @return a two-dimensional array containing the data, with the first row containing headers
  **/