diff --git a/extensions/guacamole-auth-openid/src/main/java/org/apache/guacamole/auth/oauth/token/TokenValidationService.java b/extensions/guacamole-auth-openid/src/main/java/org/apache/guacamole/auth/oauth/token/TokenValidationService.java
index a61f7ceee..84bfa3d19 100644
--- a/extensions/guacamole-auth-openid/src/main/java/org/apache/guacamole/auth/oauth/token/TokenValidationService.java
+++ b/extensions/guacamole-auth-openid/src/main/java/org/apache/guacamole/auth/oauth/token/TokenValidationService.java
@@ -38,6 +38,9 @@ import org.jose4j.keys.resolvers.HttpsJwksVerificationKeyResolver;
  */
 public class TokenValidationService {
 
+    /**
+     * Service for retrieving OAuth configuration information.
+     */
     @Inject
     private ConfigurationService confService;