diff --git a/updater/src/main/java/net/jami/jams/updater/JAMSUpdater.java b/updater/src/main/java/net/jami/jams/updater/JAMSUpdater.java
index 3437b542b61a46f138fece1e21630aca479f0ba8..b797cb87184300be02eb8314ca835d3f8fe2b39d 100644
--- a/updater/src/main/java/net/jami/jams/updater/JAMSUpdater.java
+++ b/updater/src/main/java/net/jami/jams/updater/JAMSUpdater.java
@@ -67,6 +67,6 @@ public class JAMSUpdater implements AppUpdater {
                 doUpdate.notify();
             }
         }
-        else log.error("Could not perform update!");
+        else log.error("Could not perform update - the downloaded files may have been invalid!");
     }
 }