diff --git a/ksef-client/src/main/java/pl/akmf/ksef/sdk/client/model/testdata/TestDataPermission.java b/ksef-client/src/main/java/pl/akmf/ksef/sdk/client/model/testdata/TestDataPermission.java
index 79fe9c2..e24990b 100644
--- a/ksef-client/src/main/java/pl/akmf/ksef/sdk/client/model/testdata/TestDataPermission.java
+++ b/ksef-client/src/main/java/pl/akmf/ksef/sdk/client/model/testdata/TestDataPermission.java
@@ -1,10 +1,12 @@
 package pl.akmf.ksef.sdk.client.model.testdata;
 
 import com.fasterxml.jackson.annotation.JsonCreator;
+import com.fasterxml.jackson.annotation.JsonProperty;
 import com.fasterxml.jackson.annotation.JsonValue;
 
 public class TestDataPermission {
     private String description;
+    @JsonProperty("permissionType")
     private PermissionType permission;
 
     public TestDataPermission(String description, PermissionType permission) {