diff --git a/acl/spring-security-acl.gradle b/acl/spring-security-acl.gradle
index ec3d59bbe78..f886c4f7d58 100644
--- a/acl/spring-security-acl.gradle
+++ b/acl/spring-security-acl.gradle
@@ -1,3 +1,7 @@
+plugins {
+	id 'javadoc-warnings-error'
+}
+
 apply plugin: 'io.spring.convention.spring-module'
 
 dependencies {
diff --git a/acl/src/main/java/org/springframework/security/acls/AclPermissionEvaluator.java b/acl/src/main/java/org/springframework/security/acls/AclPermissionEvaluator.java
index 9e60d9c9b9c..e1bc0f20cf3 100644
--- a/acl/src/main/java/org/springframework/security/acls/AclPermissionEvaluator.java
+++ b/acl/src/main/java/org/springframework/security/acls/AclPermissionEvaluator.java
@@ -44,7 +44,7 @@
 /**
  * Used by Spring Security's expression-based access control implementation to evaluate
  * permissions for a particular object using the ACL module. Similar in behaviour to
- * {@link org.springframework.security.acls.AclEntryVoter AclEntryVoter}.
+ * <code> org.springframework.security.acls.AclEntryVoter AclEntryVoter </code>
  *
  * @author Luke Taylor
  * @since 3.0