Fix for Jira Issue FTPSERVER-345

git-svn-id: https://svn.apache.org/repos/asf/mina/ftpserver/trunk@904081 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/core/src/main/java/org/apache/ftpserver/command/impl/MD5.java b/core/src/main/java/org/apache/ftpserver/command/impl/MD5.java
index ce5e88d..ca34a56 100644
--- a/core/src/main/java/org/apache/ftpserver/command/impl/MD5.java
+++ b/core/src/main/java/org/apache/ftpserver/command/impl/MD5.java
@@ -135,8 +135,14 @@
                 if (i > 0) {
                     sb.append(", ");
                 }
-
+                boolean nameHasSpaces = fileName.indexOf(' ') >= 0;
+                if(nameHasSpaces) {
+                	sb.append('"');
+                }
                 sb.append(fileName);
+                if(nameHasSpaces) {
+                	sb.append('"');
+                }
                 sb.append(' ');
                 sb.append(md5Hash);