diff --git a/src/main/java/org/codelibs/fess/ingest/Ingester.java b/src/main/java/org/codelibs/fess/ingest/Ingester.java
index 02e832039..0efacc36a 100644
--- a/src/main/java/org/codelibs/fess/ingest/Ingester.java
+++ b/src/main/java/org/codelibs/fess/ingest/Ingester.java
@@ -36,7 +36,11 @@ public abstract class Ingester {
     }
 
     public void register() {
-        ComponentUtil.getIngestFactory().add(this);
+        getIngestFactory().add(this);
+    }
+
+    protected IngestFactory getIngestFactory() {
+        return ComponentUtil.getIngestFactory();
     }
 
     // web/file