diff --git a/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/archiveverifier/verifier/ZipFileIntegrityVerifier.java b/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/archiveverifier/verifier/ZipFileIntegrityVerifier.java
index 759f6c2f8150fae8a5a253bdfdcb0186bb64b9c6..e0a94f39af9f6308e1c2d2848f6618ed7574cc8a 100644
--- a/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/archiveverifier/verifier/ZipFileIntegrityVerifier.java
+++ b/datastore_server/source/java/ch/systemsx/cisd/openbis/dss/archiveverifier/verifier/ZipFileIntegrityVerifier.java
@@ -73,7 +73,7 @@ public class ZipFileIntegrityVerifier extends AbstractZipFileVerifier
 
         } catch (ZipException ex)
         {
-            return new VerificationError(VerificationErrorType.ERROR, ex.getMessage());
+            return new VerificationError(VerificationErrorType.ERROR, "Corrupted zip file entry, reason: " + ex.getMessage());
         } catch (IOException ex)
         {
             return new VerificationError(VerificationErrorType.ERROR, entry.getName() + ": " + ex.getMessage());