diff --git a/src/java/davmail/exchange/VCalendar.java b/src/java/davmail/exchange/VCalendar.java
index 07483121..1fa46a8f 100644
--- a/src/java/davmail/exchange/VCalendar.java
+++ b/src/java/davmail/exchange/VCalendar.java
@@ -479,8 +479,7 @@ public class VCalendar extends VObject {
                         // than PARTSTAT=NEEDS-ACTION since the RSVP confuses iCal4 into
                         // thinking the attendee has not replied
                         if (isCurrentUser(property) && property.hasParam("RSVP", "TRUE")) {
-                            VProperty.Param partstat = property.getParam("PARTSTAT");
-                            if (partstat == null || !"NEEDS-ACTION".equals(partstat.getValue())) {
+                            if (!"NEEDS-ACTION".equals(property.getParamValue("PARTSTAT"))) {
                                 property.removeParam("RSVP");
                             }
                         }
@@ -733,7 +732,7 @@ public class VCalendar extends VObject {
                 String attendeeEmail = getEmailValue(property);
                 if (email.equalsIgnoreCase(attendeeEmail) && property.hasParam("PARTSTAT")) {
                     // found current user attendee line
-                    status = property.getParam("PARTSTAT").getValue();
+                    status = property.getParamValue("PARTSTAT");
                     break;
                 }
             }
diff --git a/src/java/davmail/exchange/VProperty.java b/src/java/davmail/exchange/VProperty.java
index c03cf5b6..a0b5a5ad 100644
--- a/src/java/davmail/exchange/VProperty.java
+++ b/src/java/davmail/exchange/VProperty.java
@@ -47,7 +47,7 @@ public class VProperty {
             values.addAll(paramValues);
         }
 
-        public String getValue() {
+        protected String getValue() {
             if (values != null && !values.isEmpty()) {
                 return values.get(0);
             } else {