diff --git a/docs/java-api/docs/index_.asciidoc b/docs/java-api/docs/index_.asciidoc
index b32955d9d4f50..a5044126dde2c 100644
--- a/docs/java-api/docs/index_.asciidoc
+++ b/docs/java-api/docs/index_.asciidoc
@@ -103,7 +103,7 @@ If you need to see the generated JSON content, you can use the
 
 [source,java]
 --------------------------------------------------
-String json = builder.string();
+String json = Strings.toString(builder);
 --------------------------------------------------