diff --git a/spring-boot-docs/src/main/asciidoc/howto.adoc b/spring-boot-docs/src/main/asciidoc/howto.adoc
index 8ea58a14f0..db43aac721 100644
--- a/spring-boot-docs/src/main/asciidoc/howto.adoc
+++ b/spring-boot-docs/src/main/asciidoc/howto.adoc
@@ -1810,7 +1810,7 @@ authentication manager is needed elsewhere), e.g.
 ----
 	@Configuration
 	public class AuthenticationManagerConfiguration extends
-	        GlobalAuthenticationConfigurerAdapter {
+			GlobalAuthenticationConfigurerAdapter {
 
 		@Override
 		public void init(AuthenticationManagerBuilder auth) {