diff --git a/changelog.html b/changelog.html
index aa083a33ff..3303a2e77d 100644
--- a/changelog.html
+++ b/changelog.html
@@ -64,6 +64,9 @@ Upcoming changes</a>
   <li class=bug>
     Fixed ConcurrentModificationException in parallel Maven 3 builds.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-11256">issue 11256</a>)
+  <li class=bug>
+    Copy artifacts fails on windows slaves due to failing to set a timestamp.
+    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-11073">issue 11073</a>)
   <li class=rfe>
     CLI jar now has the version number in the manifest as well as the "-version" option.
   <li class=rfe>
@@ -95,9 +98,6 @@ Upcoming changes</a>
   <li class=bug>
     Dependency wasn't recalculated with CLI "update-job" command.
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-11636">issue 11636</a>)
-  <li class=bug>
-    Copy artifacts fails on windows slaves due to failing to set a timestamp.
-    (<a href="https://issues.jenkins-ci.org/browse/JENKINS-11073">issue 11073</a>)
   <li class=rfe>
     Sortable table wasn't "stable" when there are same values in different rows
     (<a href="https://issues.jenkins-ci.org/browse/JENKINS-11551">issue 11551</a>)
diff --git a/core/src/main/java/hudson/FilePath.java b/core/src/main/java/hudson/FilePath.java
index 3a8f236db5..73646db2a2 100644
--- a/core/src/main/java/hudson/FilePath.java
+++ b/core/src/main/java/hudson/FilePath.java
@@ -291,7 +291,7 @@ public final class FilePath implements Serializable {
     /**
      * Checks if the remote path is Unix.
      */
-    private boolean isUnix() {
+    boolean isUnix() {
         // if the path represents a local path, there' no need to guess.
         if(!isRemote())
             return File.pathSeparatorChar!=';';
@@ -1429,7 +1429,7 @@ public final class FilePath implements Serializable {
             target.touch(lastModified());
         } catch (IOException e) {
             // On Windows this seems to fail often. See JENKINS-11073
-            if (!isUnix()) {
+            if (!target.isUnix()) {
                 LOGGER.warning("Failed to set timestamp on " + target.getRemote());
             } else { // rethrow
                 throw new IOException2(e);
diff --git a/core/src/test/java/hudson/FilePathTest.java b/core/src/test/java/hudson/FilePathTest.java
index c91ce89978..dd385d8c92 100644
--- a/core/src/test/java/hudson/FilePathTest.java
+++ b/core/src/test/java/hudson/FilePathTest.java
@@ -23,6 +23,7 @@
  */
 package hudson;
 
+import hudson.remoting.LocalChannel;
 import hudson.remoting.VirtualChannel;
 import hudson.util.IOException2;
 import hudson.util.NullStream;
@@ -296,5 +297,23 @@ public class FilePathTest extends ChannelTestCase {
             Util.deleteRecursive(baseDir);
         }
     }
+    
+    @Bug(11073)
+    public void testIsUnix() {
+        FilePath winPath = new FilePath(new LocalChannel(null),
+                " c:\\app\\hudson\\workspace\\3.8-jelly-db\\jdk/jdk1.6.0_21/label/sqlserver/profile/sqlserver\\acceptance-tests\\distribution.zip");
+        assertFalse(winPath.isUnix());
+
+        FilePath base = new FilePath(new LocalChannel(null),
+                "c:\\app\\hudson\\workspace\\3.8-jelly-db");
+        FilePath middle = new FilePath(base, "jdk/jdk1.6.0_21/label/sqlserver/profile/sqlserver");
+        FilePath full = new FilePath(middle, "acceptance-tests\\distribution.zip");
+        assertFalse(full.isUnix());
+        
+        
+        FilePath unixPath = new FilePath(new LocalChannel(null),
+                "/home/test");
+        assertTrue(unixPath.isUnix());
+    }
 
 }