diff --git a/Dotify/src/org/daisy/dotify/system/DuplicatorTask.java b/Dotify/src/org/daisy/dotify/system/DuplicatorTask.java
index 714eb816..c35250cb 100644
--- a/Dotify/src/org/daisy/dotify/system/DuplicatorTask.java
+++ b/Dotify/src/org/daisy/dotify/system/DuplicatorTask.java
@@ -28,7 +28,7 @@ public DuplicatorTask(String name, File copy) {
 	@Override
 	public void execute(File input) throws InternalTaskException {
 		try {
-			FileUtils.copy(input, copy);
+			FileUtils.copyFile(input, copy);
 		} catch (IOException e) {
 			throw new InternalTaskException("Exception while copying file.", e);
 		}
diff --git a/Dotify/src/org/daisy/dotify/system/TaskRunner.java b/Dotify/src/org/daisy/dotify/system/TaskRunner.java
index 293a9bf0..159dd321 100644
--- a/Dotify/src/org/daisy/dotify/system/TaskRunner.java
+++ b/Dotify/src/org/daisy/dotify/system/TaskRunner.java
@@ -108,7 +108,7 @@ private void writeTempFile(File source, String taskSystemName, String taskName,
 		fileName += ".tmp";
 		File f = new File(tempFilesFolder, fileName);
 		logger.fine("Writing debug file: " + f);
-		FileUtils.copy(source, f);
+		FileUtils.copyFile(source, f);
 	}
 	
 	private String truncate(String str, int pos) {