diff --git a/core/src/main/java/com/opensymphony/xwork2/factory/DefaultInterceptorFactory.java b/core/src/main/java/com/opensymphony/xwork2/factory/DefaultInterceptorFactory.java
index a1d9ee2ce7..580464130e 100644
--- a/core/src/main/java/com/opensymphony/xwork2/factory/DefaultInterceptorFactory.java
+++ b/core/src/main/java/com/opensymphony/xwork2/factory/DefaultInterceptorFactory.java
@@ -70,13 +70,18 @@ public Interceptor buildInterceptor(InterceptorConfig interceptorConfig, Map<Str
                 reflectionProvider.setProperties(params, o);
             }
 
+            Interceptor interceptor = null;
             if (o instanceof Interceptor) {
-                Interceptor interceptor = (Interceptor) o;
-                interceptor.init();
-                return interceptor;
+                interceptor = (Interceptor) o;
+            } else if (o instanceof org.apache.struts2.interceptor.Interceptor) {
+                interceptor = Interceptor.adapt((org.apache.struts2.interceptor.Interceptor) o);
             }
 
-            throw new ConfigurationException("Class [" + interceptorClassName + "] does not implement Interceptor", interceptorConfig);
+            if (interceptor == null) {
+                throw new ConfigurationException("Class [" + interceptorClassName + "] does not implement Interceptor", interceptorConfig);
+            }
+            interceptor.init();
+            return interceptor;
         } catch (InstantiationException e) {
             cause = e;
             message = "Unable to instantiate an instance of Interceptor class [" + interceptorClassName + "].";
diff --git a/core/src/main/java/com/opensymphony/xwork2/factory/DefaultResultFactory.java b/core/src/main/java/com/opensymphony/xwork2/factory/DefaultResultFactory.java
index e5fe5f8d55..5466a52ea2 100644
--- a/core/src/main/java/com/opensymphony/xwork2/factory/DefaultResultFactory.java
+++ b/core/src/main/java/com/opensymphony/xwork2/factory/DefaultResultFactory.java
@@ -20,6 +20,7 @@
 
 import com.opensymphony.xwork2.ObjectFactory;
 import com.opensymphony.xwork2.Result;
+import com.opensymphony.xwork2.config.ConfigurationException;
 import com.opensymphony.xwork2.config.entities.ResultConfig;
 import com.opensymphony.xwork2.inject.Inject;
 import com.opensymphony.xwork2.util.reflection.ReflectionException;
@@ -51,7 +52,16 @@ public Result buildResult(ResultConfig resultConfig, Map<String, Object> extraCo
         Result result = null;
 
         if (resultClassName != null) {
-            result = (Result) objectFactory.buildBean(resultClassName, extraContext);
+            Object o = objectFactory.buildBean(resultClassName, extraContext);
+            if (o instanceof Result) {
+                result = (Result) o;
+            } else if (o instanceof org.apache.struts2.Result) {
+                result = Result.adapt((org.apache.struts2.Result) o);
+            }
+            if (result == null) {
+                throw new ConfigurationException("Class [" + resultClassName + "] does not implement Result", resultConfig);
+            }
+
             Map<String, String> params = resultConfig.getParams();
             if (params != null) {
                 for (Map.Entry<String, String> paramEntry : params.entrySet()) {
diff --git a/core/src/main/java/com/opensymphony/xwork2/interceptor/ConditionalInterceptor.java b/core/src/main/java/com/opensymphony/xwork2/interceptor/ConditionalInterceptor.java
index 83c2bcb3e1..0e83f64b2e 100644
--- a/core/src/main/java/com/opensymphony/xwork2/interceptor/ConditionalInterceptor.java
+++ b/core/src/main/java/com/opensymphony/xwork2/interceptor/ConditionalInterceptor.java
@@ -28,9 +28,32 @@
 @Deprecated
 public interface ConditionalInterceptor extends org.apache.struts2.interceptor.ConditionalInterceptor, Interceptor {
 
+    @Override
     default boolean shouldIntercept(org.apache.struts2.ActionInvocation invocation) {
         return shouldIntercept(ActionInvocation.adapt(invocation));
     }
 
     boolean shouldIntercept(ActionInvocation invocation);
+
+    static ConditionalInterceptor adapt(org.apache.struts2.interceptor.ConditionalInterceptor actualInterceptor) {
+        if (actualInterceptor instanceof ConditionalInterceptor) {
+            return (ConditionalInterceptor) actualInterceptor;
+        }
+        return actualInterceptor != null ? new LegacyAdapter(actualInterceptor) : null;
+    }
+
+    class LegacyAdapter extends Interceptor.LegacyAdapter implements ConditionalInterceptor {
+
+        private final org.apache.struts2.interceptor.ConditionalInterceptor adaptee;
+
+        private LegacyAdapter(org.apache.struts2.interceptor.ConditionalInterceptor adaptee) {
+            super(adaptee);
+            this.adaptee = adaptee;
+        }
+
+        @Override
+        public boolean shouldIntercept(ActionInvocation invocation) {
+            return adaptee.shouldIntercept(invocation);
+        }
+    }
 }
diff --git a/core/src/main/java/com/opensymphony/xwork2/interceptor/Interceptor.java b/core/src/main/java/com/opensymphony/xwork2/interceptor/Interceptor.java
index 628dda6f5e..e6ff42998e 100644
--- a/core/src/main/java/com/opensymphony/xwork2/interceptor/Interceptor.java
+++ b/core/src/main/java/com/opensymphony/xwork2/interceptor/Interceptor.java
@@ -34,4 +34,38 @@ default String intercept(org.apache.struts2.ActionInvocation invocation) throws
     }
 
     String intercept(ActionInvocation invocation) throws Exception;
+
+    static Interceptor adapt(org.apache.struts2.interceptor.Interceptor actualInterceptor) {
+        if (actualInterceptor instanceof org.apache.struts2.interceptor.ConditionalInterceptor) {
+            return ConditionalInterceptor.adapt((org.apache.struts2.interceptor.ConditionalInterceptor) actualInterceptor);
+        }
+        if (actualInterceptor instanceof Interceptor) {
+            return (Interceptor) actualInterceptor;
+        }
+        return actualInterceptor != null ? new LegacyAdapter(actualInterceptor) : null;
+    }
+
+    class LegacyAdapter implements Interceptor {
+
+        private final org.apache.struts2.interceptor.Interceptor adaptee;
+
+        protected LegacyAdapter(org.apache.struts2.interceptor.Interceptor adaptee) {
+            this.adaptee = adaptee;
+        }
+
+        @Override
+        public String intercept(ActionInvocation invocation) throws Exception {
+            return adaptee.intercept(invocation);
+        }
+
+        @Override
+        public void destroy() {
+            adaptee.destroy();
+        }
+
+        @Override
+        public void init() {
+            adaptee.init();
+        }
+    }
 }
diff --git a/core/src/main/java/org/apache/struts2/factory/StrutsResultFactory.java b/core/src/main/java/org/apache/struts2/factory/StrutsResultFactory.java
index 0a758f2138..2818f33dda 100644
--- a/core/src/main/java/org/apache/struts2/factory/StrutsResultFactory.java
+++ b/core/src/main/java/org/apache/struts2/factory/StrutsResultFactory.java
@@ -20,13 +20,14 @@
 
 import com.opensymphony.xwork2.ObjectFactory;
 import com.opensymphony.xwork2.Result;
+import com.opensymphony.xwork2.config.ConfigurationException;
 import com.opensymphony.xwork2.config.entities.ResultConfig;
 import com.opensymphony.xwork2.factory.ResultFactory;
 import com.opensymphony.xwork2.inject.Inject;
+import com.opensymphony.xwork2.result.ParamNameAwareResult;
 import com.opensymphony.xwork2.util.reflection.ReflectionException;
 import com.opensymphony.xwork2.util.reflection.ReflectionExceptionHandler;
 import com.opensymphony.xwork2.util.reflection.ReflectionProvider;
-import com.opensymphony.xwork2.result.ParamNameAwareResult;
 
 import java.util.Map;
 
@@ -53,7 +54,15 @@ public Result buildResult(ResultConfig resultConfig, Map<String, Object> extraCo
         Result result = null;
 
         if (resultClassName != null) {
-            result = (Result) objectFactory.buildBean(resultClassName, extraContext);
+            Object o = objectFactory.buildBean(resultClassName, extraContext);
+            if (o instanceof Result) {
+                result = (Result) o;
+            } else if (o instanceof org.apache.struts2.Result) {
+                result = Result.adapt((org.apache.struts2.Result) o);
+            }
+            if (result == null) {
+                throw new ConfigurationException("Class [" + resultClassName + "] does not implement Result", resultConfig);
+            }
             Map<String, String> params = resultConfig.getParams();
             if (params != null) {
                 setParameters(extraContext, result, params);