--- old/src/windows/native/java/io/WinNTFileSystem_md.c	Tue Sep 28 16:19:54 2010
+++ new/src/windows/native/java/io/WinNTFileSystem_md.c	Tue Sep 28 16:19:53 2010
@@ -434,7 +434,9 @@
             a = GetFileAttributesW(pathbuf);
         }
     }
-    if (a != INVALID_FILE_ATTRIBUTES) {
+    if ((a != INVALID_FILE_ATTRIBUTES) &&
+        ((a & FILE_ATTRIBUTE_DIRECTORY) == 0))
+    {
         if (enable)
             a =  a & ~FILE_ATTRIBUTE_READONLY;
         else
@@ -796,9 +798,10 @@
         }
     }
 
-    if (a != INVALID_FILE_ATTRIBUTES) {
+    if ((a != INVALID_FILE_ATTRIBUTES) &&
+        ((a & FILE_ATTRIBUTE_DIRECTORY) == 0)) {
         if (SetFileAttributesW(pathbuf, a | FILE_ATTRIBUTE_READONLY))
-        rv = JNI_TRUE;
+            rv = JNI_TRUE;
     }
     free(pathbuf);
     return rv;