diff --git a/src/main/java/cokr/xit/base/file/xls/XLS.java b/src/main/java/cokr/xit/base/file/xls/XLS.java
index f65ae62..a11a80b 100644
--- a/src/main/java/cokr/xit/base/file/xls/XLS.java
+++ b/src/main/java/cokr/xit/base/file/xls/XLS.java
@@ -4,8 +4,6 @@ import java.io.InputStream;
 import java.io.OutputStream;
 import java.text.SimpleDateFormat;
 import java.util.Date;
-import java.util.Map;
-import java.util.function.Function;
 
 import org.springframework.core.io.ClassPathResource;
 
@@ -114,14 +112,14 @@ public abstract class XLS extends AbstractComponent {
 		int length = str.length(),
 			pos = length - 6;
 
-		String
-			date = str.substring(0, pos),
-			time = str.substring(pos);
-
-		return str2date(date) + " " + str2time(time);
-	}
+		try {
+			String
+				date = str.substring(0, pos),
+				time = str.substring(pos);
 
-	public final Function<Map<?, ?>, Object> wrap(Function<Map<?, ?>, Object> func) {
-		return func;
+			return str2date(date) + " " + str2time(time);
+		} catch (Exception e) {
+			return str;
+		}
 	}
 }
\ No newline at end of file