diff --git a/jsdoc.js b/jsdoc.js
index 02f28d14..87dc6981 100644
--- a/jsdoc.js
+++ b/jsdoc.js
@@ -246,8 +246,8 @@ function main() {
         }
     }
     
-    if (env.opts.source.include) {
-        env.opts._ = (env.opts._ || []).concat(env.opts.source.include);
+    if (env.conf.source.include) {
+        env.opts._ = (env.opts._ || []).concat(env.conf.source.include);
     }
     
     if (env.opts._.length > 0) { // are there any files to scan and parse?