diff --git a/core/src/main/java/hudson/FilePath.java b/core/src/main/java/hudson/FilePath.java
index 321dd3a2c62e5dfcf158643fc876fad780fd1e87..8d8254ec250a729b9ace5fc659417a06d5d411d1 100644
--- a/core/src/main/java/hudson/FilePath.java
+++ b/core/src/main/java/hudson/FilePath.java
@@ -913,8 +913,17 @@ public final class FilePath implements Serializable {
      */
     public <T> Future<T> actAsync(final FileCallable<T> callable) throws IOException, InterruptedException {
         try {
+            DelegatingCallable<T,IOException> wrapper = new FileCallableWrapper<T>(callable);
+            Jenkins instance = Jenkins.getInstance();
+            if (instance != null) { // this happens during unit tests
+                ExtensionList<FileCallableWrapperFactory> factories = instance.getExtensionList(FileCallableWrapperFactory.class);
+                for (FileCallableWrapperFactory factory : factories) {
+                    wrapper = factory.wrap(wrapper);
+                }
+            }
+
             return (channel!=null ? channel : Jenkins.MasterComputer.localChannel)
-                .callAsync(new FileCallableWrapper<T>(callable));
+                .callAsync(wrapper);
         } catch (IOException e) {
             // wrap it into a new IOException so that we get the caller's stack trace as well.
             throw new IOException2("remote file operation failed",e);