diff --git a/src/iec61850/server/mms_mapping/control.c b/src/iec61850/server/mms_mapping/control.c
index 6ed95887..61e6f103 100644
--- a/src/iec61850/server/mms_mapping/control.c
+++ b/src/iec61850/server/mms_mapping/control.c
@@ -267,6 +267,7 @@ copyControlValuesToTrackingObject(MmsMapping* self, ControlObject* controlObject
             }
             else if (serviceType == IEC61850_SERVICE_TYPE_CANCEL) {
                 if (controlObject->cancel) {
+                    operVal = controlObject->cancel;
                     if (trkInst->Test) {
                         MmsValue_update(trkInst->Test->mmsValue, getCancelParameterTest(operVal));
                     }