diff --git a/src/main/java/ru/ulstu/core/util/DateUtils.java b/src/main/java/ru/ulstu/core/util/DateUtils.java
index bbcc86b..6a23521 100644
--- a/src/main/java/ru/ulstu/core/util/DateUtils.java
+++ b/src/main/java/ru/ulstu/core/util/DateUtils.java
@@ -14,6 +14,9 @@ import java.util.List;
 public class DateUtils {
 
     public static Date clearTime(Date date) {
+        if (date == null) {
+            return null;
+        }
         Calendar calendar = Calendar.getInstance();
         calendar.setTime(date);
         calendar.set(Calendar.HOUR_OF_DAY, 0);