diff --git a/src/main/asciidoc/customizing-sdr.adoc b/src/main/asciidoc/customizing-sdr.adoc
index e1f9fbf0e..a097fee25 100644
--- a/src/main/asciidoc/customizing-sdr.adoc
+++ b/src/main/asciidoc/customizing-sdr.adoc
@@ -19,7 +19,7 @@ On Java 8, we can register the mapping methods as method references to tweak the
 [source, java]
 ----
 @Component
-public class SpringDataRestCustomization extends RepositoryRestConfigurer {
+public class SpringDataRestCustomization implements RepositoryRestConfigurer {
 
   @Override
   public void configureRepositoryRestConfiguration(RepositoryRestConfiguration config) {