diff --git a/src/META-INF/MANIFEST.MF b/src/META-INF/MANIFEST.MF
index c33cff4..cfc460c 100644
--- a/src/META-INF/MANIFEST.MF
+++ b/src/META-INF/MANIFEST.MF
@@ -3,8 +3,8 @@ Created-By: Hartwig Thomas, Enter AG, Zurich, Switzerland
 Specification-Title: ZIP64
 Specification-Version: 1.0
 Implementation-Title: Zip64
-Implementation-Version: 2.1.62
+Implementation-Version: 2.1.63
 Implementation-Vendor: Enter AG, Rüti ZH, Switzerland
-Built-Date: 19. Jun 2019
+Built-Date: 27. Jun 2019
 Main-Class: ch.enterag.zip.zip64
 Class-Path: ../lib/enterutils.jar
diff --git a/test/ch/enterag/utils/zip/zip64Tester.java b/test/ch/enterag/utils/zip/zip64Tester.java
index 7bfe474..1743282 100644
--- a/test/ch/enterag/utils/zip/zip64Tester.java
+++ b/test/ch/enterag/utils/zip/zip64Tester.java
@@ -468,9 +468,10 @@ else if (sEntry.equals("full/full.txt"))
         sOutput = sOutput.substring(iPosition+2);
         /* 2 seconds is maximum resolution of DOS date */
         boolean bDateIncorrect = true;
-        for (long lTime = 2000*(long)Math.floor(fileEntry.lastModified()/2000.0); bDateIncorrect && (lTime <= 2000*(long)Math.ceil(fileEntry.lastModified()/2000.0)); lTime = lTime + 1L)
+        double dLastModifiedSec = fileEntry.lastModified()/1000.0;
+        for (long lTime = (long)Math.floor(dLastModifiedSec-2.0); bDateIncorrect && (lTime <= (long)Math.ceil(dLastModifiedSec+2.0)); lTime = lTime + 1L)
         {
-          String sFileDate = DATE_FORMAT.format(new Date());
+          String sFileDate = DATE_FORMAT.format(new Date(1000*lTime));
           if (!sOutput.startsWith(sFileDate))
             bDateIncorrect = false;
         }