diff --git a/src/main/java/org/codelibs/fess/crawler/transformer/AbstractFessFileTransformer.java b/src/main/java/org/codelibs/fess/crawler/transformer/AbstractFessFileTransformer.java
index 82dc6238d..a2e7039fb 100644
--- a/src/main/java/org/codelibs/fess/crawler/transformer/AbstractFessFileTransformer.java
+++ b/src/main/java/org/codelibs/fess/crawler/transformer/AbstractFessFileTransformer.java
@@ -337,6 +337,9 @@ public abstract class AbstractFessFileTransformer extends AbstractTransformer im
             if (!fessConfig.isCrawlerIgnoreContentException()) {
                 throw e;
             }
+            if (logger.isDebugEnabled()) {
+                logger.debug("Could not get a text.", e);
+            }
         }
         return new ExtractData();
     }