diff --git a/synthtool/gcp/templates/node_library/.jsdoc.js b/synthtool/gcp/templates/node_library/.jsdoc.js
index 0dbad2168..d53dccf94 100644
--- a/synthtool/gcp/templates/node_library/.jsdoc.js
+++ b/synthtool/gcp/templates/node_library/.jsdoc.js
@@ -31,7 +31,7 @@ module.exports = {
   source: {
     excludePattern: '(^|\\/|\\\\)[._]',
     include: [
-      'src'
+      '{{ source_location or 'src' }}'
     ],
     includePattern: '\\.js$'
   },