diff --git a/src/main/java/ru/soune/nocopy/dto/tarriff/TariffRequest.java b/src/main/java/ru/soune/nocopy/dto/tarriff/TariffRequest.java
index 1eb335c..ef18158 100644
--- a/src/main/java/ru/soune/nocopy/dto/tarriff/TariffRequest.java
+++ b/src/main/java/ru/soune/nocopy/dto/tarriff/TariffRequest.java
@@ -24,25 +24,20 @@ public class TariffRequest {
     @JsonProperty("tariff_name")
     private String name;
 
-    @Min(value = 0, message = "Price cannot be negative")
     @JsonProperty("tariff_price")
-    private double price;
+    private Double price;
 
-    @Min(value = 0, message = "Tokens must be at least 0")
     @JsonProperty("tariff_tokens")
-    private int tokens;
+    private Integer tokens;
 
-    @Min(value = 0, message = "Max files count must be at least 0")
     @JsonProperty("max_files")
-    private int maxFilesCount;
+    private Integer maxFilesCount;
 
-    @Min(value = 0, message = "Disk size must be at least 0")
     @JsonProperty("disk_size")
-    private int diskSize;
+    private Long diskSize;
 
-    @Min(value = 0, message = "Max users must be at least 0")
     @JsonProperty("max_users")
-    private int maxUsers;
+    private Long maxUsers;
 
     @JsonProperty("action")
     private String action;
diff --git a/src/main/java/ru/soune/nocopy/service/tariff/TariffService.java b/src/main/java/ru/soune/nocopy/service/tariff/TariffService.java
index 3ab603b..dee2260 100644
--- a/src/main/java/ru/soune/nocopy/service/tariff/TariffService.java
+++ b/src/main/java/ru/soune/nocopy/service/tariff/TariffService.java
@@ -114,17 +114,33 @@ public class TariffService {
     }
 
     private Tariff updateTariffFromDTO(Tariff tariff, TariffDTO dto, TariffRequest tariffRequest) {
-        tariff.setType(tariffRequest.getType() == null ? dto.getType(): tariffRequest.getType());
-        tariff.setName(tariffRequest.getName() == null ? dto.getName(): tariffRequest.getName());
-        tariff.setPrice(tariffRequest.getPrice() == 0 ? dto.getPrice(): tariffRequest.getPrice());
-        tariff.setTokens(tariffRequest.getTokens() == 0 ? dto.getTokens(): tariffRequest.getTokens());
-        tariff.setMaxFilesCount(tariffRequest.getMaxFilesCount() == 0 ? dto.getMaxFilesCount():
-                tariffRequest.getMaxFilesCount());
-        tariff.setDiskSize(tariffRequest.getDiskSize() == 0 ? dto.getDiskSize(): tariffRequest.getDiskSize());
-        tariff.setMaxUsers(tariffRequest.getMaxUsers() == 0 ? dto.getMaxUsers(): tariffRequest.getMaxUsers());
-        tariff.setDescription(tariffRequest.getDescription() == null ? dto.getDescription(): tariffRequest.getDescription());
-        tariff.setTariffTerm(tariffRequest.getTariffTerm() == null ? TariffTimeTerm.valueOf(dto.getTariffTerm().toUpperCase()):
-                TariffTimeTerm.valueOf(tariffRequest.getTariffTerm()));
+        if (tariffRequest.getType() != null) {
+            tariff.setType(tariffRequest.getType());
+        }
+        if (tariffRequest.getName() != null) {
+            tariff.setName(tariffRequest.getName());
+        }
+        if (tariffRequest.getPrice() != null) {  // null = не обновляем
+            tariff.setPrice(tariffRequest.getPrice());
+        }
+        if (tariffRequest.getTokens() != null) {
+            tariff.setTokens(tariffRequest.getTokens());
+        }
+        if (tariffRequest.getMaxFilesCount() != null) {
+            tariff.setMaxFilesCount(tariffRequest.getMaxFilesCount());
+        }
+        if (tariffRequest.getDiskSize() != null) {
+            tariff.setDiskSize(tariffRequest.getDiskSize());
+        }
+        if (tariffRequest.getMaxUsers() != null) {
+            tariff.setMaxUsers(tariffRequest.getMaxUsers());
+        }
+        if (tariffRequest.getDescription() != null) {
+            tariff.setDescription(tariffRequest.getDescription());
+        }
+        if (tariffRequest.getTariffTerm() != null) {
+            tariff.setTariffTerm(TariffTimeTerm.valueOf(tariffRequest.getTariffTerm()));
+        }
 
         return tariff;
     }