diff --git a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/facade/AntenatalExaminationFacade.java b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/facade/AntenatalExaminationFacade.java
index 771140e..4ad8956 100644
--- a/platform-operate-api/src/main/java/com/lyms/platform/operate/web/facade/AntenatalExaminationFacade.java
+++ b/platform-operate-api/src/main/java/com/lyms/platform/operate/web/facade/AntenatalExaminationFacade.java
@@ -1041,7 +1041,7 @@ public class AntenatalExaminationFacade {
         Collections.sort(listDate, new Comparator<SortIn>() {
             @Override
             public int compare(SortIn o1, SortIn o2) {
-                if (o1.getDate().after(o2.getDate())) {
+                if (o1.getDate() != null && o1.getDate().after(o2.getDate())) {
                     return -1;
                 }
                 if (o1.getDate().before(o2.getDate())) {