diff --git a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/SpecialModelName.java b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/SpecialModelName.java
index e2a554aed56..00f04d03418 100644
--- a/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/SpecialModelName.java
+++ b/samples/openapi3/client/petstore/java/jersey2-java8/src/main/java/org/openapitools/client/model/SpecialModelName.java
@@ -89,6 +89,8 @@ public class SpecialModelName {
   }
 
 
+  @JsonProperty(JSON_PROPERTY_SPECIAL_MODEL_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
   public void setSpecialModelName(String specialModelName) {
     this.specialModelName = specialModelName;
   }
diff --git a/samples/openapi3/client/petstore/java/native/src/main/java/org/openapitools/client/model/SpecialModelName.java b/samples/openapi3/client/petstore/java/native/src/main/java/org/openapitools/client/model/SpecialModelName.java
index 139664c4d88..758ed1e21b1 100644
--- a/samples/openapi3/client/petstore/java/native/src/main/java/org/openapitools/client/model/SpecialModelName.java
+++ b/samples/openapi3/client/petstore/java/native/src/main/java/org/openapitools/client/model/SpecialModelName.java
@@ -88,6 +88,8 @@ public class SpecialModelName {
   }
 
 
+  @JsonProperty(JSON_PROPERTY_SPECIAL_MODEL_NAME)
+  @JsonInclude(value = JsonInclude.Include.USE_DEFAULTS)
   public void setSpecialModelName(String specialModelName) {
     this.specialModelName = specialModelName;
   }