diff --git a/adapters/oidc/spring-boot/src/main/java/org/keycloak/adapters/springboot/KeycloakSpringBootConfiguration.java b/adapters/oidc/spring-boot/src/main/java/org/keycloak/adapters/springboot/KeycloakSpringBootConfiguration.java
index 0c1bb005fe..d4c9858d34 100755
--- a/adapters/oidc/spring-boot/src/main/java/org/keycloak/adapters/springboot/KeycloakSpringBootConfiguration.java
+++ b/adapters/oidc/spring-boot/src/main/java/org/keycloak/adapters/springboot/KeycloakSpringBootConfiguration.java
@@ -209,7 +209,11 @@ public class KeycloakSpringBootConfiguration {
                 }
             }
 
-            WebAppContext webAppContext = (WebAppContext) server.getHandler();
+            WebAppContext webAppContext = server.getBean(WebAppContext.class);
+            //if not found as registered bean let's try the handler
+            if(webAppContext==null){
+                webAppContext = (WebAppContext) server.getHandler();
+            }
 
             ConstraintSecurityHandler securityHandler = new ConstraintSecurityHandler();
             securityHandler.setConstraintMappings(jettyConstraintMappings);