diff --git a/src/tests/junit/org/apache/tools/ant/util/FileUtilsTest.java b/src/tests/junit/org/apache/tools/ant/util/FileUtilsTest.java
index baeffb794..835d6dd3d 100644
--- a/src/tests/junit/org/apache/tools/ant/util/FileUtilsTest.java
+++ b/src/tests/junit/org/apache/tools/ant/util/FileUtilsTest.java
@@ -575,7 +575,8 @@ public class FileUtilsTest extends TestCase {
 
     public void testHasErrorInCase() {
         File tempFolder = new File(System.getProperty("java.io.tmpdir"));
-        File wellcased = FILE_UTILS.createTempFile("alpha", "beta", tempFolder);
+        File wellcased = FILE_UTILS.createTempFile("alpha", "beta", tempFolder,
+                                                   true, true);
         String s = wellcased.getName().toUpperCase();
         File wrongcased = new File(tempFolder, s);
         if (Os.isFamily("dos")) {