diff --git a/src/main/java/nlib/cmm/fileupload/DownloadView.java b/src/main/java/nlib/cmm/fileupload/DownloadView.java
index 9e266a30..8bc14abd 100644
--- a/src/main/java/nlib/cmm/fileupload/DownloadView.java
+++ b/src/main/java/nlib/cmm/fileupload/DownloadView.java
@@ -4,8 +4,11 @@ import java.io.File;
 import java.io.FileInputStream;
 import java.io.OutputStream;
 import java.net.URLEncoder;
+import java.nio.file.Files;
+import java.nio.file.Paths;
 import java.util.Map;
 
+import javax.activation.MimetypesFileTypeMap;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
@@ -66,6 +69,10 @@ public class DownloadView extends AbstractView {
 		}
 		
 		response.setContentType(getContentType());
+		
+		MimetypesFileTypeMap mimetypesFileTypeMap = new MimetypesFileTypeMap();
+		response.setContentType(mimetypesFileTypeMap.getContentType(fileName));
+		
 		response.setContentLength((int) file.length());
 		response.setHeader("Content-Disposition", "attachment; filename=\"" + encfileName + "\";");
 		response.setHeader("Content-Transfer-Encoding", "binary");