diff --git a/service-api/src/main/java/greencity/dto/user/ChatLinkDto.java b/service-api/src/main/java/greencity/dto/user/ChatLinkDto.java
index c6c98a942..236698c1d 100644
--- a/service-api/src/main/java/greencity/dto/user/ChatLinkDto.java
+++ b/service-api/src/main/java/greencity/dto/user/ChatLinkDto.java
@@ -1,12 +1,12 @@
 package greencity.dto.user;
 
 import com.fasterxml.jackson.annotation.JsonProperty;
-import jakarta.validation.constraints.NotBlank;
+import jakarta.validation.constraints.NotNull;
 import jakarta.validation.constraints.Pattern;
 import org.hibernate.validator.constraints.Length;
 
 public record ChatLinkDto(
     Long userId,
-    @JsonProperty("link") @Length(max = 255) @NotBlank @Pattern(regexp = "^https://my\\.binotel\\.ua.*",
+    @JsonProperty("link") @Length(max = 255) @NotNull @Pattern(regexp = "^https://my\\.binotel\\.ua.*",
         message = "Link must start with 'https://my.binotel.ua'") String link) {
 }
diff --git a/service/src/test/java/greencity/ModelUtils.java b/service/src/test/java/greencity/ModelUtils.java
index 684cf12f6..f56b19955 100644
--- a/service/src/test/java/greencity/ModelUtils.java
+++ b/service/src/test/java/greencity/ModelUtils.java
@@ -113,6 +113,7 @@
 import greencity.dto.tariff.GetTariffLimitsDto;
 import greencity.dto.tariff.GetTariffsInfoDto;
 import greencity.dto.tariff.SetTariffLimitsDto;
+import greencity.dto.user.ChatLinkDto;
 import greencity.dto.user.PersonalDataDto;
 import greencity.dto.user.UserInfoDto;
 import greencity.dto.user.UserPointsAndAllBagsDto;
@@ -5702,4 +5703,8 @@ public static Employee createTestEmployee(Long id) {
         employee.setEmail("test@example.com");
         return employee;
     }
+
+    public static ChatLinkDto getChatLinkDto(String link) {
+        return new ChatLinkDto(1L, link);
+    }
 }
diff --git a/service/src/test/java/greencity/service/ubs/OrdersAdminsPageServiceImplTest.java b/service/src/test/java/greencity/service/ubs/OrdersAdminsPageServiceImplTest.java
index 307fb6338..894c7a625 100644
--- a/service/src/test/java/greencity/service/ubs/OrdersAdminsPageServiceImplTest.java
+++ b/service/src/test/java/greencity/service/ubs/OrdersAdminsPageServiceImplTest.java
@@ -133,6 +133,7 @@ class OrdersAdminsPageServiceImplTest {
     private static final String ADDRESS_COMMENT = "commentToAddressForClient";
     private static final String CLIENT_COMMENT = "commentForOrderByClient";
     private static final String ORDER_COMMENT = "commentsForOrder";
+    private static final String CHAT_LINK = "https://my.binotel.ua/f/chat/#/visitor/21269249.12893974";
 
     @Test
     void getParametersForOrdersExceptionTable() {
@@ -1362,7 +1363,26 @@ void addChatLinkToUserTest() {
         when(userRepository.findById(anyLong())).thenReturn(Optional.ofNullable(ModelUtils.getUser()));
 
         ordersAdminsPageService
-            .addChatLinkToUser(new ChatLinkDto(1L, "https://my.binotel.ua/f/chat/#/visitor/21269249.12893974"));
+            .addChatLinkToUser(ModelUtils.getChatLinkDto(CHAT_LINK));
+
+        verify(userRepository).findById(anyLong());
+        verify(userRepository).save(any(User.class));
+    }
+
+    @Test
+    void addChatLinkToUserWithNotExistingUserTest() {
+        ChatLinkDto chatLinkDto = ModelUtils.getChatLinkDto(CHAT_LINK);
+        when(userRepository.findById(anyLong())).thenReturn(Optional.empty());
+
+        assertThrows(NotFoundException.class,
+            () -> ordersAdminsPageService.addChatLinkToUser(chatLinkDto));
+    }
+
+    @Test
+    void addChatLinkToUserWithEmptyLinkTest() {
+        when(userRepository.findById(anyLong())).thenReturn(Optional.ofNullable(ModelUtils.getUser()));
+
+        ordersAdminsPageService.addChatLinkToUser(ModelUtils.getChatLinkDto(""));
 
         verify(userRepository).findById(anyLong());
         verify(userRepository).save(any(User.class));