diff --git a/src/java/davmail/caldav/CaldavConnection.java b/src/java/davmail/caldav/CaldavConnection.java
index 96d45785..660bdd5d 100644
--- a/src/java/davmail/caldav/CaldavConnection.java
+++ b/src/java/davmail/caldav/CaldavConnection.java
@@ -1448,7 +1448,7 @@ public class CaldavConnection extends AbstractConnection {
         }
 
         protected boolean isIcal5() {
-            return isUserAgent("CoreDAV/") || isUserAgent("iOS/5") || isUserAgent("iOS/6")
+            return isUserAgent("CoreDAV/") || isUserAgent("iOS/")
                     // iCal 6
                     || isUserAgent("Mac OS X/10.8");
         }