diff --git a/src/main/java/org/codelibs/fess/crawler/processor/FessResponseProcessor.java b/src/main/java/org/codelibs/fess/crawler/processor/FessResponseProcessor.java
index fe1f63c3c..60c090212 100644
--- a/src/main/java/org/codelibs/fess/crawler/processor/FessResponseProcessor.java
+++ b/src/main/java/org/codelibs/fess/crawler/processor/FessResponseProcessor.java
@@ -30,11 +30,13 @@ import org.codelibs.fess.util.ComponentUtil;
 public class FessResponseProcessor extends DefaultResponseProcessor {
     private static final Logger logger = LogManager.getLogger(FessResponseProcessor.class);
 
-    private IngestFactory ingestFactory;
+    private IngestFactory ingestFactory = null;
 
     @PostConstruct
     public void init() {
-        ingestFactory = ComponentUtil.getIngestFactory();
+        if (ComponentUtil.hasIngestFactory()) {
+            ingestFactory = ComponentUtil.getIngestFactory();
+        }
     }
 
     @Override
@@ -43,6 +45,9 @@ public class FessResponseProcessor extends DefaultResponseProcessor {
     }
 
     private ResultData ingest(final ResponseData responseData, final ResultData resultData) {
+        if (ingestFactory == null) {
+            return resultData;
+        }
         ResultData target = resultData;
         for (final Ingester ingester : ingestFactory.getIngesters()) {
             try {
diff --git a/src/main/java/org/codelibs/fess/ds/callback/IndexUpdateCallbackImpl.java b/src/main/java/org/codelibs/fess/ds/callback/IndexUpdateCallbackImpl.java
index 7ddf9ae9f..e1c6ca2eb 100644
--- a/src/main/java/org/codelibs/fess/ds/callback/IndexUpdateCallbackImpl.java
+++ b/src/main/java/org/codelibs/fess/ds/callback/IndexUpdateCallbackImpl.java
@@ -52,7 +52,7 @@ public class IndexUpdateCallbackImpl implements IndexUpdateCallback {
 
     protected int maxDocumentCacheSize;
 
-    private IngestFactory ingestFactory;
+    private IngestFactory ingestFactory = null;
 
     @PostConstruct
     public void init() {
@@ -61,7 +61,9 @@ public class IndexUpdateCallbackImpl implements IndexUpdateCallback {
         }
         maxDocumentRequestSize = Long.parseLong(ComponentUtil.getFessConfig().getIndexerDataMaxDocumentRequestSize());
         maxDocumentCacheSize = ComponentUtil.getFessConfig().getIndexerDataMaxDocumentCacheSizeAsInteger();
-        ingestFactory = ComponentUtil.getIngestFactory();
+        if (ComponentUtil.hasIngestFactory()) {
+            ingestFactory = ComponentUtil.getIngestFactory();
+        }
     }
 
     /* (non-Javadoc)
diff --git a/src/main/java/org/codelibs/fess/util/ComponentUtil.java b/src/main/java/org/codelibs/fess/util/ComponentUtil.java
index 301de1c5a..516e2d032 100644
--- a/src/main/java/org/codelibs/fess/util/ComponentUtil.java
+++ b/src/main/java/org/codelibs/fess/util/ComponentUtil.java
@@ -528,6 +528,10 @@ public final class ComponentUtil {
         return SingletonLaContainerFactory.getContainer().hasComponentDef(RELATED_QUERY_HELPER);
     }
 
+    public static boolean hasIngestFactory() {
+        return SingletonLaContainerFactory.getContainer().hasComponentDef(INGEST_FACTORY);
+    }
+
     public static boolean available() {
         try {
             return SingletonLaContainer.getComponent(SYSTEM_HELPER) != null;