diff --git a/build.gradle b/build.gradle
index 89d42389a..c2f7ba9f1 100644
--- a/build.gradle
+++ b/build.gradle
@@ -212,7 +212,7 @@ task docsZip(type: Zip, dependsOn:['asciidoctor', 'referencePdf' ]) {
         into 'api'
     }
 
-    from ("$buildDir/reference/html") {
+    from ("$asciidoctor.outputDir") {
         include "index.html"
         include "spring.css"
         into 'reference/html'